April 18, 2014

Search: Na2CO2(s)+HCl(aq)NaCl+H2O(L)+CO2(g)

Number of results: 24,717

What is the chemical equation for the combustion reaction between methanol and air? CH4 + O2 ==> CO2 + H2O. All hydrocarbons produce CO2 and H2O when they are combusted in air. The above equation isn't balanced. I assume you can do that? If not, ask OR take a shot at it and...
Thursday, January 18, 2007 at 10:28pm by Raj

pH = -log (H^+) pH = 3.00, (H^+) = 1E-3 pH = 10.00 (H^+) = 1E-10 and OH^- = 1E-4 moles = M x L For HCl = 1E-3 x 0.200 = 2E-4 moles. For NaOH = 1E-4 x 0.200 = 2E-5 moles. .............HCl + NaOH ==> NaCl + H2O initial..... 2E-4..2E-5.......0....0 change......-2E-5.-2E-5....+...
Thursday, December 16, 2010 at 9:42pm by DrBob222

Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2 (g) DeltaH= -4.6x10^2 kJ How much heat is evolved when 0.598 g of Mg are dissolved in excess HCl? I'm not sure how to go about this problem. What I thought to do was: 0.598 g x 1 mol Mg/24.31 g Mg x 2 mol HCl/ 1 mol Mg x 36.46 g HCl/ 1 ...
Wednesday, November 3, 2010 at 11:45pm by Jarrod

HF(aq) + NaOH(aq) ==> NaF + H2O Net ionic is HF(aq) + OH^-(aq) ==> F^-(aq) + H2O(l)
Saturday, October 16, 2010 at 5:12pm by DrBob222

You haven't written the correct equation. It should be CuCO3(s) ==> Cu^2+(aq) + CO3^2-(aq) I'll give you a couple of hints. Adding HCl will react with CO3^2- to form H2O and CO2, thus decreasing CO3^2-. Remember Le Chatelier's Principle--decreasing CO3^2- will drive the ...
Wednesday, April 4, 2012 at 10:09pm by DrBob222

You need two ICE charts for this; i.e., one for the strong acid HCl and one for H2O. HCl is a strong acid; therefore, it dissociates completely (100%). .......HCl --> H^+ + Cl^- I.....7.2E-8....0......0 C...-7.2E-8...7.2E-8...7.2E-8 E......0......7.2E-8..7.2E-8 ........H2O...
Thursday, September 27, 2012 at 8:46pm by DrBob222

NaOH + HCl ==> NaCl + H2O mols HCl = M x L = ? mols NaOH = mols HCl (Look at the coefficients in the balanced equation.) Then M NaOH = molos NaOH/L NaOH. You may calculate the three values for the three different volumes, then average the three M values OR you may average ...
Sunday, November 25, 2012 at 3:26pm by DrBob222

Na2CO3 + 2HCl ==> 2NaCl + H2O + H2O mol HCl = M x L = ? Convert mol HCl to mol Na2CO3 using the coefficients in the balanced equation. ?mol HCl x (1 mol Na2CO3/2 mol HCl) = ?mol HCl x 1/2 = xx mol Na2CO3. M Na2CO3 = mol Na2CO3/L Na2CO3.
Wednesday, January 11, 2012 at 12:47pm by DrBob222

I don't know if this is the right solution or not because you didn't list the temperature. Heating to about 270 C converts NaHCO3 to Na2CO3 quantitatively as follows: 2NaHCO3 ==> Na2CO3 + H2O + CO2 If heated to a higher temperature, Na2CO3 loses all of the CO2 to form Na2O ...
Sunday, February 28, 2010 at 10:40pm by DrBob222

How many milliliters of 11.5 M HCl(aq) are needed to prepare 310.0 mL of 1.00 M HCl(aq)?
Tuesday, March 19, 2013 at 9:21pm by Robert

Chemistry: Neutralization
Since this is a 1:1 reaction between acid and base; HCl + NaOH ==> NaCl + H2O you may use mL x M = mL x M
Monday, February 7, 2011 at 10:14pm by DrBob222

Consider the reaction HCl + NaOH ->NaCl + H2O Given: HCl Solution: 22 degrees celsius NaOH Solution: 22 degrees celsius Final Temperature: 26.1 degrees celsius A. Calculate the amount of heat evolved when 15 mL of 1.0 M HCl was mixed with 35 mL of 1.0 M NaOH B. Calculate ...
Monday, March 28, 2011 at 12:11pm by Vanessa

This question is based on an experiment to determine the mass of ASA. Information from the experiment : ASA is a weak acid with a Ka value of 3.2 x 10^-4. An ASA tablet has an approximate mass of 500 mg. The experiment used a titration with a standardized 0.100 mol/L ...
Tuesday, June 4, 2013 at 12:29pm by Kelsey

Balance this equation. NaHCO3(s) + heat ----> Na2CO3(s) + H2O(l) + CO2(g). i balanced it & got: 2NaHCO3(s)+ heat -->Na2CO3(s)+ H2O(g)+CO2(g) is this right ? Determine how many moles of CO2(g) is produced when 7mols of NaHCO3 are consumed. how do i do this ?
Thursday, February 24, 2011 at 10:10pm by Hannah

Can someone please help me with balancing ASAP
This is a redox, you have to balance charge. Have you studied redox? origSpecies NewSpecies change Mn+7.............Mn+2 .......gained 5 electrons S+4...............S+6.......lost two electrons SO,you will need to Mn for each five S 2MnO4−(aq) + 2.5(SO3)2−(aq) + H+(aq...
Friday, December 14, 2012 at 10:50am by bobpursley

NaOH + HCl ==> NaCl + H2O moles NaOH initially = in the problem. moles HCl initially = M x L = ?? Subtract the two (the smaller from the larger) and the difference is the amount of the larger one in excess. Then H^+ or OH^- = (moles larger/total L) = ?? Convert that answer ...
Sunday, November 28, 2010 at 9:00pm by DrBob222

Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
Sunday, April 8, 2012 at 9:17pm by Maci

Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
Sunday, April 8, 2012 at 9:28pm by Maci

Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
Sunday, April 8, 2012 at 9:28pm by Maci

AP Chemistry
All of this type can be worked the same way. 1. Write and balance the equation. NaOH + HCl ==> NaCl + H2O 2. How many mols do you have? mols = M x L = 0.81M x 0.77L = 0.624 3. Since 1 mol NaOH = 1 mol HCl (from the equation), then mols HCl = mols NaOH. 4. Those three steps ...
Thursday, January 30, 2014 at 6:46pm by DrBob222

For the following equilibrium process: CO2 + H2 = CO + H2O The equilibrium concentrations of reacting species are: [CO]= .050 M; [H2]= .045 M; [CO2]= .086 M; [H2O]= .040 M. (a) Calculate Kc for the reaction (b) If we add CO2 to increase its concentration to 0.50 mol/L, what ...
Saturday, August 16, 2008 at 9:08pm by Ronnie

CHEM desperate help!
What is the Kc for the following equilibrium CO2(g)+H2(g)←→CO(g)+H2O(g) if [CO] = 0.32M , [H2O] = 0.26M , [CO2] = 0.30M , and [H2] = 3.310−2M ?
Sunday, July 28, 2013 at 10:31pm by Anonymous

What kind of reaction is this (redox, precipitation, acid-base, or complex ion formation reaction)? 1. 3 Ca(s) + 2 Al^3+(aq) -> 3 Ca^2+(aq) + 2 Al(s) 2. LiHCO3(s) + heat -> Li2CO3(s) + CO2(g) + H2O(g) Complete the reaction: Ni(s) + 2 Na^+(aq) -> ?
Monday, October 21, 2013 at 7:04pm by Fred

. Given the following stocks 4M NaCl, 3M NaOH, 5M HCl (a) Prepare 200ml of a solution containing 0.5M NaCl and 0.1M (b) Prepare 300ml of a solution containing 0.5M NaCl (c) Prepare 200ml of a solution containing 0.5M NaCl and 0.1M HCl
Friday, April 15, 2011 at 6:49am by tom

Here is a step by step procedure that will solve most stoichiometry problems. The equation you have is NaHCO3 + HCl ==> H2O + CO2 + NaCl
Friday, October 8, 2010 at 12:00am by DrBob222

In accordance with Hess's Law, manipulate the following equations and their change in Hrxn to calculate change in Hrxn's for the reaction HClO4 + NH3 N NH4ClO4... HClO4(aq)+ LiOH(aq) LiClO4(aq)+H2O(l) CH3COOH(aq)+ NH3(aq)  NH4CH3COO(aq) CH3COOH(aq...
Sunday, July 7, 2013 at 3:49pm by Angela

If 380. mL of 0.4294 M aqueous CaBr2 and 250. mL of 0.5880 M aqueous SO42- are reacted stoichiometrically according to the equation, how many mol of CaBr2 remained? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) ----------------------------------------- If 270. ...
Wednesday, November 17, 2010 at 1:01am by Confused

what volume (in ML) of a 0.150 M HNO3 solution is required to completely react wtih 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced chemical equation? Na2CO3(aq) + 2 HNO3(aq) --> 2NaNO3(aq) + H2O(l) then, in the reaction above, what mass (in grams) ...
Monday, June 21, 2010 at 2:53pm by samantha

Chemistry Pleasee Help
Can you please help me with these problems, I followed the textbook but i am still not getting the write balanced equations.I am not sure if it is the phases or my balancing, or if i got the right answers and not submitting it correctly Please I really need help :( Write ...
Tuesday, October 5, 2010 at 10:40pm by George K.

Yes, the ratio is 1:1 because of the equation. HCl + NaOH ==> NaCl + H2O It means 0.1 mol HCl and 0.1 mol NaOH react exactly; also it means that the moles NaOH must equal the moles of HCl at the equivalence point. So if you started with 30 mL of 0.1 HCl, you started with M ...
Monday, May 17, 2010 at 12:56pm by DrBob222

what simple test would you use to identify the possible presence of HCl(aq)? What result do you expect if the solution is HCl(aq)?
Thursday, October 16, 2008 at 2:27am by Lili

Calculate the equilibrium constant at 25 C for CH4 + 2 H2O --> CO2 + 4H2 given: delta G for CH4 = -50.81 H2O = -228.6 CO2 = -394.4 H2 = 0
Monday, August 1, 2011 at 11:16am by hal

chem. question?+asap!!!!!
For the reaction, state if the reaction is quantitative, or, if not, state whether products or reactants are favoured at equilibrium. 1. 100 mL of 0.1 mol/L nitric acid reacts with 100 mL of 0.1 mol/L ammonium hydrogen carbonate My question is how do I know if it is quantitive...
Saturday, June 17, 2006 at 3:13pm by say what?

Identify the acid/conjugate base and base/conjugate acid pairs for the following reactions H2CO3(aq) + H2O(l) <===> H3O+(aq) + HCO3 -(aq) C5H5N(aq) + H2O(l) <===> C5H5NH+(aq) + OH-(aq
Thursday, April 28, 2011 at 10:45am by jake

Chem Pre-Lab HELP!
Write the complete and net ionic equations for the following reactions. Be sure to indicate the states of the reaction products. 1) AgNO3(aq) + NaCl(aq) ----> 2) CaCl2(aq) + Na2SO4(aq) ----> 3) Pb(ClO4)2(aq) + NaOH(ag) ----> 4) (NH4)2SO4(aq) + BaCl2(aq) ---->
Tuesday, February 23, 2010 at 9:52pm by Macey

Additional comments: 1) Using the Bronsted-Lowry model of acids and bases, H3O+ is an acid since it can donate a proton: H3O+(aq) + NH3(aq) --> NH4+(aq) + H2O H3O+ is not an ampholyte since it is not known to accept a proton from another proton donor (acid). It does not ...
Wednesday, June 10, 2009 at 6:01pm by GK

State the type of reaction. Predict the products of the reactions. I have no clue how to do this any help? C3H8 + O2 ---> Mg + HCl ---> AgNO3 + NaCl ---> CuSO4 + Zn ---> How much of this do you know how to do? Just checking answers. Give us your answers and we ...
Tuesday, March 20, 2007 at 3:36pm by Paul

A complicated work but do-able. NaOH + HCl ==> NaCl + H2O. I think one must decide where we are at the equivalence point. Since the M NaOH is twice that of the HCl, that means the HCl will take twice as much to neutralize the NaOH. So that 35 mL is made up of 2 mL HCl for ...
Sunday, May 2, 2010 at 11:52pm by DrBob222

One method of removing CO2(g) from a spacecraft is to allow the CO2 to react with LiOH. 2LiOH(s)+CO2(g)---->Li2CO3(s)+H2O(l) How many liters of CO2(g) at 25.5 degrees celsius and 749 Torr can be removed per 9kg of LiOH consumed?
Tuesday, October 26, 2010 at 3:40pm by Kaylee

This is a limiting reagent. I know that because amounts are given for BOTH reactants. C3H8 + 5O2 ==> 3CO2 + 4H2O mols C3H8 = 4.4/molar mass = about 0.1. mols O2 = 16/molar mass = about 0.5 Convert each to mols H2O, then to grams H2O. 0.1 mol C3H8 x (4 mols H2O/1 mol C3H8...
Monday, May 20, 2013 at 10:18am by DrBob222

Right answer. Wrong reason. Entropy doesn't enter into it. To do a VERY detailed answer: HCl(aq) ==> H^+ + Cl^- The excess H^+ from the HCl reacts with the OH^- from the ionization of Mg(OH)2 to form H2O. This reduces the concn of OH^- on the right and, by Le Chatelier's ...
Sunday, February 7, 2010 at 10:49pm by DrBob222

Ca(HCO3)2(aq) ==> CaCO3(s) + H2O(l) + CO2(g) Isn't that balanced as is (except for the obvious typose)
Saturday, November 6, 2010 at 12:58pm by DrBob222

2Na + 2H2O ==> H2 + 2NaOH HCl + NaOH ==> NaCl + H2O 0.32 g Na x (1 mole/23 g Na) = ?? moles Na. You know from the equation that 2 moles Na will produce 2 moles NaOH (of course 1 mole produces 1 mole) and you know 1 mole HCl reacts with 1 mole NaOH. Therefore, the moles ...
Tuesday, November 17, 2009 at 10:35pm by DrBob222

please help me balance these equations using the method of half reactions.. Na + HCL = NaCl + H2 Pb + PbO2 + H2SO4 = PbSO4 +H2O Thank you, even a little help is appreciated.
Wednesday, April 2, 2014 at 12:25am by Justin

How many moles is 0.26 g Na? moles = grams/molar mass = 0.26/23 = ?? 2Na + 2H2O ==> H2 + 2NaOH HCl + NaOH ==> NaCl + H2O Since 2 moles Na produces 2 moles NaOH (1mole to 1 mole) and 1 mole HCl neutralizes 1 mole NaOH, then ?? moles Na will require ?? moles HCl to ...
Tuesday, November 17, 2009 at 12:44pm by DrBob222

Equation: 3CaCl2 (aq) + 2 Na3PO4 (aq) → Ca3(PO4)2 (s) + 6 NaCl (aq) How many grams of Ca3(PO4)2 are formed when 450.0 g NaCl are formed in the reaction? please show steps, please
Wednesday, February 6, 2013 at 9:02pm by Sarah

Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete dissociation) so net...
Tuesday, November 8, 2011 at 7:12pm by BOB PLEASE HELP!:)

Describe how you would obtain pure crystals of Sodium chloride from a muxture of solid sodium chloride and solid zinc carbonate Step1 Step 2 Step 3 1. Add HCl to react with the carbonate. The products are zinc chloride, CO2, and water. The CO2 leaves as a gas and the water is ...
Tuesday, April 24, 2007 at 11:37am by Ali

What is the molarity of the hydrochloric acid solution used if 25mL of it reacted with excess calcium carbonate to produce 5.3g of calcium chloride? CaCo3(s) + 2HCl(aq)---> CaCl2(aq) + CO2(g) + H2O(l) I am really confused on even what this question is asking..any help would...
Sunday, November 20, 2011 at 8:22pm by Jenn

Homework Help ME! Science
In the reaction mechanism below, indicate what substance is acting like a catalyst. Step 1: H2O2 (aq) + I- (aq) → H2O (l) + IO- (aq) Step 2: H2O2 (aq) + IO- (aq) → H2O (l) + I- (aq) Is the catalyst in the problem above a heterogeneous or a homogeneous catalyst?
Thursday, June 30, 2011 at 11:13pm by Emma

Which pairs of substances will form a buffer when mixed in equal concentrations? A)NaOH and HCl B)NH3 and NH4+ C)H2O and NH3 D)KCl and NaCl E)HF and F-
Saturday, May 28, 2011 at 12:03pm by Pierre

HCl + NaOH ==> NaCl + H2O mols NaOH = M x L = ? mols HCl = mols NaOH (look at the coefficients in the balanced equation.) M acid = mols acid/L acid.
Saturday, November 24, 2012 at 6:47pm by DrBob222

Extraction equations
We did an extraction. A solid including benzoid acid, p-nitroaniline, and napthalene was dissolved in dichloromethane. HCl was added to give the aqueous salt of p-nitroanaline. NaOH was added to give the aqueous salt of benzoic acid. Napthalene remained. We then air dried them...
Saturday, October 7, 2006 at 9:24pm by Sheryl

total volume=9.7e-4L .........HCl + NaOH ==> H2O + NaCl initial.8e-4....0........0......0 add...........1.7e-4................ change -1.7e-4 -1.7e-4 +1.7e-4 +1.7e-4 equil..6.3e-4...o......1.7e-4..1.7e-4 HCl:(6.3e-4 mol)/(9.7e-4 L)=0.6495 M and for pH I got 0.187 but it's ...
Saturday, April 28, 2012 at 3:38pm by Jody

Moles of NH3 = (0.0500L)(0.100mol/L) = 0.00500 mol NH3. 0.0500 L + 0.0200 L = 0.0700 L total volume Moles of NH3/Liter = 0.00500 mol NH3/0.0700 L) = 0.07143 mol/L = 0.07143 M NH3 (before reacting with HCl) (0.250mol/L)(0.0200L)/(0.0700L) = 0.07143 M HCl The reaction is: ...
Sunday, February 15, 2009 at 4:21pm by GK

Consider this reaction: CO (g) + H2O (g0 <---> CO2(g)+H2(g) kc=102 at 500 K A reaction mixture initially contains 0.145 M of CO and 0.145 M of H20. What would be the equilibrium concentration of [CO]? I so far have kc= [H2][CO2]/[CO][H2O]= 102 I know i have to set up an ...
Sunday, March 21, 2010 at 8:00pm by Katie

the products are CO2 + H2O C57 h110 O6 + O2 >> 57 CO2 + 55 H2O now to find the O2: on the right, we have 114+55 O=169O or 84.5 O2 C57 h110 O6 + 84.5O2 >> 57 CO2 + 55 H2O Now since small minds cannot comprehend non whole numbers in balanced equations (what is ...
Tuesday, January 22, 2013 at 6:09pm by bobpursley

CO2(g) + H2(g) equilibrium reaction arrow CO(g) + H2O(g) Calculate the equilibrium concentration of each compound if 2.00 moles of CO2 and 2.40 moles of H2 are placed in a 3.90 liter container at 300C. Kc = 2.30 for the reaction at this temperature. [CO2] = M [H2] = M [CO] = ...
Wednesday, December 18, 2013 at 9:36pm by Isaiah

What is a molt? Do you mean mol? 2HCl + Ca(OH)2 ==> 2H2O + CaCl2 3.61 mol HCl will produce 3.61 mol H2O. That's because 2 mol HCl produce 2 mols H2O (from the balanced equation). Now convert mols H2O to g. g = mols x molar mass H2O.
Monday, October 29, 2012 at 10:27am by DrBob222

How many milliliters of 0.250 M KMnO4 are needed to react with 3.36 g of Iron(II) sulfate, FeSO4? The reaction is as follows: 10FeSO4(aq) + 2KMnO4(aq) + 8H2SO4(aq) 5Fe2(SO4)3(aq) + 2MnSO4(aq) + K2SO4(aq) + 8 H2O(l
Sunday, October 9, 2011 at 8:39pm by John

By titration it is found that 76.3Ml of 0.178M of NaOH(aq) is needed to neutralize 25.00mL of HCL(aq). Calculate the concentration of the HCl solution.
Wednesday, April 17, 2013 at 10:17am by Katherine

What would be happening in this reaction? 2Ag^+(aq) + CO3^2-(aq) + HNO3 (aq) -----> 2AgNO3(s) + H20(l) + CO2(aq)
Friday, February 26, 2010 at 7:54pm by Abby

When 0.969 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 397C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. Delta Hrxn, for the reaction of CaO(s) + 2H+(aq) Ca2+(aq) + ...
Sunday, February 24, 2008 at 3:37pm by Anonymous

chem-help pls!
When 0.975 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 400C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. Hrxn, for the reaction of CaO(s) + 2H+(aq) Ca2+(aq) + H2O(l) ...
Monday, February 25, 2008 at 1:06pm by Anonymous

I agree with the oil/water mix. For NaCl and H2O, who says NaCl is non-polar? It may not be the most polar compound in the world but it's in the top 90% anyway. The electronegativity for Na is about 0.9 and that for Cl is about 3.0 which makes a difference of about 2.1 and ...
Tuesday, April 30, 2013 at 12:28am by DrBob222

Which of these is true about the following reaction? NaOH + HCl NaCl + H2O A. NaOH is the proton acceptor. B. HCl acts as the Brnsted-Lowry acid. C. NaOH and HCl are the products. D. This is an example of a neutralization reaction. E. The products will be acidic. Okay so ...
Monday, March 29, 2010 at 5:11pm by Lily

CaCO3 + 2HCl ==> CaCl2 + CO2 + H2O You can dissolve just half as many moles CaCO3 as you have of HCl.
Tuesday, March 16, 2010 at 10:51pm by DrBob222

Balanced equation: 2HCL+CaCO2>CaCl2+CO2+H2O what volume of 6.00 M HCL is needed to completely react with .750 moles of CaCO3
Monday, March 28, 2011 at 2:53pm by patti

Balanced equation: 2HCL+CaCO2>CaCl2+CO2+H2O what volume of 6.00 M HCL is needed to completely react with .750 moles of CaCO3
Monday, March 28, 2011 at 2:53pm by patti

the reaction is......CaCO3+2HCl---->CO2+H2O+CaCl2. what mass of HCl will be neutralized by 0.50g ofCaCO3? How do i figure this out in a non-complicated way??
Tuesday, July 16, 2013 at 3:31pm by mimmi

Na2CO3 + 2HCl ==> 2NaCl + H2O + CO2 How many moles HCl do you have to neutralize? That will be moles = M x L = ? How many moles Na2CO3 will that take. It will take half as many moles as HCl. How many grams is that? moles = grams/molar mass.
Wednesday, November 3, 2010 at 9:11pm by DrBob222

6 lbs melted ice x 454 g/lb = ? grams H2O as the solvent. 2 lbs NaCl x 454 = ? grams NaCl. delta T = i*Kf*m i = 1.44 Kf = 1.86 You need m to solve for delta T. mol NaCl = grams NaCl/molar mass NaCl molality = moles NaCl/kg solvent. delta T = i*Kf*m Subtract delta T from 0 C to...
Tuesday, September 11, 2012 at 10:26pm by DrBob222

Can you please check my work? I got -4.3KJ/mol If this is not right can you tell me what I am doing wrong? Thank you! Questions. 1.a. Use Hess's Law and the measured mean enthalpy changes for the NaOH-HCl and NH3-HCl reactions to calculate the enthalpy change to be expected ...
Friday, November 8, 2013 at 3:45pm by Lauren

This is not a simple question. 1. Use the Debye-Huckel relationship to calculate the pH of 0.01M HCl. That is not the simple pH = -log(0.01) = 2 2. Now do the same for the mixture of 0.01M HCl and 5.80g NaCl after converting NaCl to mols then to M. 3. Solve for delta pH.
Friday, February 14, 2014 at 6:05pm by DrBob222

Which of the following redox reactions are spontaneous -- SN2+(aq)+BA(s)->Sn(s)+Ba2+(aq) 2AG+(ag)+2Cl-(aq)->2Ag(s)+C12(g) ZN(s)+F2(g)->2F-(aq)+Zn2+(aq) 2LI(s)+Co2+->(aq)->2Li+(aq)+Co(s) 2I-(aq)+K+(aq)->I2(s)+K(s) I believe it is A, C & E
Monday, June 7, 2010 at 6:24pm by Mary

11.4 mL x 0.1M NaOH = 1.14 mmoles NaOH. 8.00 mL x 0.1M HCl = 0.800 mmoles HCl. 9.00 mL x 0.1M HAc = 0.800 mmoles HAc ...........NaOH + HCl ==> NaCl + H2O initial..1.14....0.800.....0......0 change..-0.800....-0.800..0.800..0.800 equil....0.34......0......0.800..0.800 ...
Sunday, October 30, 2011 at 9:10pm by DrBob222

The idea here is that no conductance means the material is not ionized which means the major species is molecular and not ionic. For example, #1 the major material must be H2O (as opposed to H^+ and OH^-). #5. CaCO3 is slightly soluble. The major component is CaCO3. The minor ...
Sunday, September 12, 2010 at 10:12pm by DrBob222

Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system: Addition of NaOH (aq) ...
Tuesday, February 19, 2013 at 8:55pm by Anonymous

Which of these are balenced? 2 C4H10( g) + 13 O2( g)h8 CO2( g) + 10 H2O(l) 4 C6H7N5O16(s) + 19 O2( g)h24 CO2( g) + 20 NO2( g) + 14 H2O(g) I dont understand this anyhelp would be greatly appreciated.
Friday, November 9, 2012 at 9:58pm by Sue L

I suppose to make it complete the HCl reacts with H2O as follows: HCl + H2O ==> H3O^+ + Cl^- You're quite welcome and come back anytime you have a question. It helps us help you if you explain in detail what you don't understand.
Tuesday, November 20, 2012 at 11:02pm by DrBob222

C3H8 + 5O2  3CO2 + 4H2O mols C3H8 = grams/molar mass Using the coefficients in the balanced equation, convert mols C2H8 to mols CO2. Now convert mols CO2 to L remembering that 1 mol occupies 22.4 L OR you can use PV = nRT and solve for V in L../
Sunday, December 8, 2013 at 7:44pm by DrBob222

Chemistry - DrBob222
Alright, I've made a list of reactions that would produce precipatations. NaCl + Zn CaCl2 + NaOH CaCl2 + Zn CaCl2 + Na2SO4 CuSO4 + NaOH CuSO4 + Zn NaOH + AgNO3 NaOH + Zn BaOH2 + AgNO3 BaOH2 + Zn BaOH2 + Na2SO4 So this way I can figure if it is NaCl, CaCl2, CuSO4, NaOH,Ba(OH)2...
Sunday, November 11, 2007 at 8:34pm by Raj

Chem- Ideal Gas Law
This is a limiting reagent (LR) problem. CaCO3 + 2HCl ==> H2O + CO2 + CaCl2 mols CaCO3 = grams/molar mass mols CO2 = mols CaCO3 (from the coefficients in the balanced equation). mols HCl = M x L = ? mols CO2 = 1/2 that (do the coefficient thing again.) The values for mols ...
Wednesday, April 2, 2014 at 11:13pm by DrBob222

1. The bombardier beetle uses an explosive discharge as a defensive measure. The chemical reaction involved is the oxidation of hydroquinone by hydrogen peroxide to produce quinine and water: C6H4(OH)2 (aq) + H2O2 (aq) �� C6H4O2 (aq) + 2 H2O (l) ...
Thursday, October 29, 2009 at 7:59pm by Mahir

The freezing point depression of a 0.100 molality solution of NaCl(aq) solution is 0.34 deg C. Calculate the % dissociation of NaCl(aq) (Kf for water = 1.86 deg Cm^-1)
Sunday, August 30, 2009 at 5:10pm by AJ

The solubility of NaCl in water is 35.7 g NaCl/100 g H2O. Suppose that you have 500.0 g of NaCl. What is the minimum volume of water you would need to dissolve it all? The density of water is 1.0 g/mL.
Monday, January 17, 2011 at 6:56pm by Maria

NaOH + HCl --> NaCl + H2O What is the amount of heat absorbed by water? given: mass: 102.2 grams specific heat: .9601 cal/g degrees C
Tuesday, April 6, 2010 at 4:21pm by Janae

Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq...
Sunday, January 29, 2012 at 11:56pm by Erik

How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Show all of the work needed to solve this problem. Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
Tuesday, January 17, 2012 at 5:09pm by bryan

3.0% NaCl by mass means 3.0 g NaCl/100 g solution and that is the same as 30.0 g NaCl/1,000 g solution. That consists of 30.0g NaCl/(30.0g NaCl + 970 g H2O) The 1000g soln has a volume of 1000/1.10 = 909.091. So if we had a L of the solution, the amount of NaCl would be 30.0 g...
Wednesday, December 8, 2010 at 11:08pm by DrBob222

General Chemistry
millimoles HCl = 8.00 mL x 0.1M=0.8mmols. mmoles NaOH = 2.50 mL x 0.1M = 0.25 mmols. mmoles NaOH = 9.50 x 0.1M = 0.95 mmoles. mmoles HAc = 8.00 mL x 0.1M = 0.8 mmoles. -------------------------------------- ..........HCl + NaOH ==> H2O + NaCl initial...0.8....0........0...
Sunday, November 6, 2011 at 9:28pm by DrBob222

how do you tell which reactant is limiting reactant with the following information: mass of cup 55.78g mass o/sodium bicarbonate 1.01g mass o/citric acid 1.52g toal mass 58.31g mass of cup,solute after reaction 59.95g mass o/carbon dioxide .42g H3C6H5O7(aq) + 3 NaHCO3(aq) ...
Friday, March 9, 2012 at 12:26am by jo

2NaHCO3 ==> Na2CO3 + CO2 + H2O mols NaHCO3 to start = grams/molar mass. Convert mols NaHCO3 to mols CO2 using the coefficients in the balanced equation. Convert mols CO2 to L remembering that mols CO2 x 22.4 L/mol = L CO2.
Saturday, May 5, 2012 at 12:55pm by DrBob222

H2SO4(aq) + BaCl2(aq) --> BaSO4(s) + 2HCl(aq) Note: I wouldn't want to prepare it this way if I were to drink it. I don't want to drink the HCl. 2Al^3+(aq) + 3SO4^2-(aq) + 3Ca^2+(aq) + 6OH^-(aq) ==> 2Al(OH)3(s) + 3CaSO4(s) 3Ca^2+(aq) + 2PO4^3-(aq) ==> Ca3(PO4)2(s)
Wednesday, October 10, 2012 at 10:35pm by DrBob222

You appear to be trying to use the reactants and simply sum them to find the product. That is what is wrong. For example, Na + Cl2 ==> is not NaCl2 but NaCl. When Na combines with Na, the result is NaCl because Na has a valence of +1 and Cl has a valence of -1 therefore the...
Thursday, February 10, 2011 at 2:06pm by DrBob222

Determine the emf for the cell noted below. (For Co3+(aq) + e- → Co2+(aq), E0 = 1.80 V, and for Na+(aq) + e- → Na(s), E0 = -2.71 V.) Na(s) | Na+(aq) || Co3+(aq), Co2+(aq) | Co(s) What is being oxidized? What is being reduced? What has the more positive reduction ...
Friday, April 27, 2012 at 10:22am by Anonymous

Suppose that we had used 25.5cm3 of 0.200M NaOH and 42cm3 of dilute HCl to reach the end point. What is the molarity of the Hcl acid? HCl = NaOh--> NaCl + H20
Monday, March 15, 2010 at 12:27am by Anonymous

Pretaining to HCl.... H2C2O4(aq) + 2NH3(aq) --> 2NH4(aq) + C2O4(aq)
Monday, March 25, 2013 at 10:32pm by Anonymous

Calculate the weight (in mg) of borax Na2B4O7.10H20 required to react with 25.0 mL if 0.100 M HCI No. moles HCl consumed = __________ moles No. moles borax required = __________ moles Molar mass of borax = __________ g mol-1 (Na2B4O7.10H2O) Weight borax required = __________ g...
Monday, April 22, 2013 at 6:04am by alex

Volume of HCl, mL:26.5mL Volume of NaOH,mL:29.1mL Molarity of NaOH, mol/L:0.1m/L balanced equation: NaOh+HCl-->NaCl+H2O Using the above equation calculate the number of moles of acid required to react with 2.91 moles of base. Please help me I have no idea what to do.
Monday, May 28, 2012 at 5:23pm by Gaby

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>