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April 24, 2014

Search: NaOH

Number of results: 2,782

chemistry
analysis of a mixture of carbonate and bicarbonate: I did an experiment where 2.306g of unknown was diluted with distilled water to 250ml. Then 3 25mL samples of this unknown were titrated with .0663 M HCl and end point volumes were: 41.12mL, 41.00mL and 40.99mL. Then 3 more ...
Wednesday, September 25, 2013 at 10:03am by martini

Chemistry
Calculate the enthalpy change of formation for the following reactions using Hess's law, and the enthalpies of formation given in Figure 4: b) MgO +2HCl --> MgCl2 +H2O c)NaOH+ HCl -->NaCl +H20 Figure4: the given enthalpies of formation compound values are: Mg(OH)2 is ...
Thursday, January 30, 2014 at 7:40am by BOB

Chemistry -help
To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:- 1) 2.0g of NaOH was dissolved in 80ml of CO2 free water. 2) 3 drops of phenolphthalein indicator were added and the solution was titrated with 1M HCl. Colour changed from ...
Saturday, September 18, 2010 at 10:44pm by anne

Chemistry
Calculate the pH after 0.016 mole of NaOH is added to 1.05 L of a solution consisting of 0.138 M HONH2 and 0.127 M HONH3Cl, and calculate the pH after 0.016 mole of HCl is added to 1.05 L of the same solution of HONH2 and HONH3Cl. (Assume that all solutions are at 25C.) 0.016...
Wednesday, March 13, 2013 at 2:46am by Margaret

Chem
NaOH (aq) + Zn (solid) reaction
Monday, November 12, 2007 at 12:32am by John

chemistry
why NaOH must be standardized?
Friday, March 5, 2010 at 10:16am by zukhruf

chemistry
NaOH+CO(NH2)2----> what's the products??
Friday, June 25, 2010 at 8:02am by renee

chemistry
30.0 mL of 1.50 M NaOH is diluted to 50.0 mL. What is the resulting pH?
Monday, February 28, 2011 at 3:58pm by Anonymous

Chemistry
ph balance of NaOH + H2O
Monday, March 7, 2011 at 10:06pm by Kel

Chemistry
How can i prepare a solution of 12 g 50% (w/v) NaOH?
Friday, June 17, 2011 at 8:07am by PAnos

chemistry 111
How many moles are in 6.35 g of NaOH
Wednesday, November 2, 2011 at 12:36pm by Anonymous

chemistry
How many moles NaOH in 66.4 mL of 0.1 M solution?
Thursday, December 8, 2011 at 11:28am by Anonymous

chemistry
How do you calculate molarity of NaOH?
Monday, June 18, 2012 at 12:34pm by Mitsy

Chemistry
Calculate the pH of 30.0 mL of 0.025 M NaOH
Tuesday, November 27, 2012 at 12:35am by Jen

Chemistry
Calculate the pH of 30.0 mL of 0.025 M NaOH
Tuesday, November 27, 2012 at 12:35am by Jen

Chemistry
How many mL of 0.49 M HCl will neutralize 42 mL of 1.48 M NaOH?
Sunday, April 20, 2014 at 11:23pm by Eric

chemistry
1)when benzoic acid and quinine is dissolved in CH2Cl2 and added 2M NaOH, what is the organic layer and what is the aqueous layer? a)and by adding another 2M NaoH to the organic layer, what is the new aqueous layer and organic layer? b)from (1), if we add CH2Cl2 to the aqueous...
Tuesday, March 31, 2009 at 7:34am by Nancy

chemistry
when pressure decreases what happens with the boiling point, it decreases, increases or stays the same? I read the book (the example used is water) were it says that if vapor pressure is less than the pressure pushing down on the surface the bubbles formed collapse; but when ...
Wednesday, May 23, 2007 at 9:29pm by Fabiola

Chemistry, pH, Buffers
Please help!! Given this data: mass of unknown acid 1.4671g Volume of NaOH used in titration 18.47mL Concentration of the NaOH used 0.2403M pH of the original acid solution 2.16 pH of the final acid solution 3.49 Show me how do I calculate the Ka of the unknown acid and the ...
Monday, April 2, 2012 at 11:44am by Krina

Chemistry
I need to predict the acid/base reactions of sodium carbonate with HCl, CH3COOH, NH3, and NaOH. I'm stuck, when I'm writing out the ions to find the strongest acid and base, does the NaHCO3 become Na and HCO3, or N, H, and CO3? Also, would these be polyproptic? NaHCO3 ==> ...
Monday, March 19, 2007 at 7:44pm by Lyn

Chemistry-need help ASAP
15 ml of 3.0 M NaOH are added to the following: 500.0 ml of pure water 500.0 ml of 0.1 M formic acid 500.0 ml of 0.1 M formate of potassium 500.0 ml of a solution containing 0.1 M formic acid and 0.1 M formate of potassium. Calculate the difference of pH resulting from the ...
Monday, April 14, 2014 at 8:40pm by Sam

chem
Zn^2+(aq) + 2OH^-(aq) ----> Zn(OH)2(s) a) how the addition of HCl affects the equilibrium? my answer is it will shift to the right b) how the addition of a small amount of NaOh affects the equilibrium?my answer is it will shift to the left c) how the addition of a large ...
Monday, November 26, 2012 at 2:45pm by tracy

chemistry
I need to find a balanced chemical equation for the reaction that occurs when sodium cyanide dissolves in water. So far I have got NaCN + H2O = HCN +NaOH, does not seem balanced to me, any help please. Can't you tell if it is balanced or not? It's a matter of counting the ...
Friday, February 9, 2007 at 3:04pm by Sam

Chemistry
Procedure #1 PLEASE NOTE: Titration requires several steps in order to obtain exact results. The procedures described in this lab assume that you have already done the TITRATION TUTORIAL and are familiar with the technique. 1. Take a clean Erlenmeyer flask from the Glassware ...
Wednesday, August 11, 2010 at 4:19am by annonomus

chemistry
hi, I am trying to find the solubility of Sodium Acetate by using 0.100 mol Hydroxide(base) and 0.837 mol acetic acid( vinegar). The theoretical solubility of sodium acetate is 82.3g/100ml at 25C. Doing calculations we would want NAOH concentration of 10.47mol/l to react with ...
Tuesday, June 3, 2008 at 6:16pm by john

CHEMISTRY
ANTACID TABLET OF WEIGHT 1.3183G WAS DISSOLVED IN 75 MLOF CONC. HCl OF 0.1807M IS TITRATED WITH 20.36ML OF CONC. NaOH OF 0.1481M . FIND MILIMOLES OF HCl ADDED, FIND MILIMOLES OF NaOH USED IN TITRATION, FIND MILIMOLES OF HCl THAT DID NOT REACT WITH ANTACID, FIND MILIMOLES OF ...
Sunday, October 16, 2011 at 7:04pm by Anonymous

chemistry
How do I make a 6M NaOH solution? (25mL)
Saturday, January 19, 2008 at 11:22pm by Alex

Chem
H2C4H4O4 + NaOH how do you balance this titration?
Monday, April 21, 2008 at 6:31pm by Bryan

Chemistry
Do you expect acetaminophen to be soluble in 1.0 M NaOH? why or why not?
Wednesday, February 4, 2009 at 8:03pm by Amy

science
what is the answer for the equation NaOh+HCl?
Wednesday, October 21, 2009 at 3:27pm by me

chemistry
how to make 750ml of 1.5 m solution of naoh
Thursday, March 4, 2010 at 2:02pm by Anonymous

chemistry
If 30.0 mL of 4.8 10-2 M HBr is added to 21.5 mL of 3.6 10-2 M NaOH, what is the pH of the solution?
Tuesday, April 27, 2010 at 5:28pm by Sue

chemistry
what is the chemical equation for HCL and NaOH?
Monday, November 22, 2010 at 10:35pm by Anonymous

Chemistry
What is the pH when 25 mL of .20 M CH3COOH has been titrated with 35 mL of .10 M NaOH?
Monday, November 29, 2010 at 8:38pm by Louis

chemistry
what is the pH of an .200 M aqueous solution of NaOH?
Tuesday, November 30, 2010 at 1:31pm by Anna

chemistry
convert 4.37 moles of NaOH to grams.
Thursday, January 27, 2011 at 3:59pm by Amanda

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
Wednesday, February 9, 2011 at 1:48pm by twynna

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
Sunday, February 13, 2011 at 9:08am by twynna

chemistry
How many grams of NaOH are there in 2.5L of a 0.343 M solution?
Sunday, February 20, 2011 at 9:57am by twynna

chemistry
Calculate the pH in a 0.00500 solution of NaOH.
Monday, February 21, 2011 at 11:15pm by JC

CHEM101
Do you have to know accurately the concentration of NaOH?
Friday, February 25, 2011 at 6:33am by Mahlatse

chemistry
Mass of "KHP" to neutralize 18 mL of 0.20 M NaOH?
Friday, February 25, 2011 at 5:00am by sallay

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
Saturday, March 12, 2011 at 7:18am by n/a

Chemistry
What quantity of HNO3 can be neutralized by 0.1L of 0.50 m NaOH
Tuesday, March 29, 2011 at 9:27pm by Omar

Chemistry
What quantity of HNO3 can be neutralized by 0.1L of 0.50 m NaOH
Tuesday, March 29, 2011 at 9:28pm by Omar

CHEMISTRY
What is the concentration in normality of NAOH (19.5CM3)
Tuesday, June 28, 2011 at 7:14am by S.KALEKYE

chemistry
calculate the ph of 20 ml of .1M NaOH to 40 ml of acetic acid
Thursday, March 29, 2012 at 12:57am by mark

chemistry
calculate the ph of 20 ml of .1M NaOH to 40 ml of acetic acid
Thursday, March 29, 2012 at 1:10am by mark

chemistry
calculate the ph of 20 ml of .1M NaOH to 40 ml of acetic acid
Thursday, March 29, 2012 at 1:25am by mark

chemistry
calculate the ph of 20 ml of .1M NaOH to 40 ml of acetic acid
Thursday, March 29, 2012 at 1:26am by mark

Chemistry
How do I prepare 30 mL of NaOH by dissolving it in water?
Wednesday, October 9, 2013 at 11:34pm by AA

chemistry
0.05naoh in 2and half ml naoh?
Monday, March 10, 2014 at 5:16am by kapil

Chemistry
Can someone please help me answer these questions? Is additional information other than what is given needed to solve? Thanks in advance. 1) Calculate the PH of a buffer containing 0.100 M propanoic acid, HC3H5O2 and .100 M NaC3H502 after the following have been added. Ka for ...
Friday, December 13, 2013 at 1:39am by Charles

Chem
Write the equation for dissocation of acetic acid in water: My Answer: CH2COOH + H2O <=> H3O+ + CH3COO- Equation for hydrolysis of acetate anion in water: My Answer: CH3COO- + H2O <=> CH3COOH + OH- Now, using the above formulas, I have to show how a buffer works ...
Wednesday, March 21, 2007 at 7:29pm by Marisol

Chemistry, Buffers, pH
Hi could someone please help me in the next 5 minutes with this question: Given this data: mass of unknown acid 1.4671g Volume of NaOH used in titration 18.47mL Concentration of the NaOH used 0.2403M pH of the original acid solution 2.16 pH of the final acid solution 3.49 Show...
Friday, September 26, 2008 at 1:30am by janet

Chemistry
7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity. Work: (6)(.007)=(x)(.4) x=.105M Thanks for showing your work. I...
Thursday, April 19, 2007 at 8:29pm by Anonymous

chemistry
whats the pH if 25.0 ml of 2.0 M NaOH is added to 1.00 L of pure water?
Thursday, November 1, 2007 at 10:09pm by Niraj

Chemistry
What molarity of NaOH would produce a pH of 10? And how do you calculate it?
Wednesday, April 16, 2008 at 9:26am by Ashley

science
What is the pH of the solution created by combining 11.20 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)?
Monday, May 5, 2008 at 3:23am by sara

chdem
What is the pH of the solution created by combining 2.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq
Wednesday, August 20, 2008 at 7:24pm by Anonymous

Chemistry
Calculate the pH of a solution that is 2.00 M HF, 1.00 M NaOH, and 0.704 M NaF. (Ka = 7.2 E -4)
Wednesday, December 17, 2008 at 1:43pm by Schanee

O-CHEM
Do you expect acetaminophen to be soluble in 1.0 M NaOH? why or why not? please help... thanks
Tuesday, February 3, 2009 at 11:52pm by Nina

Chemistry
Do you expect acetaminophen to be soluble in 1.0 M NaOH? why or why not? please help... thanks
Tuesday, February 3, 2009 at 11:58pm by Nina

Organic Chemistry
Do you expect acetaminophen to be soluble in 1.0 M NaOH? why or why not?
Wednesday, February 4, 2009 at 4:49pm by Amy

chemistry
What is the pH of the solution created by combining 0.80 mL of the 0.10 M NaOH(aq)with 8.00 mL of the 0.10 M HC2H3O2(aq)?
Monday, July 13, 2009 at 7:29pm by Anonymous

science
Calculate the concentration M if you have a 0.03mol of NaOH in 22 mL
Monday, October 12, 2009 at 9:46pm by lj

Chemistry
What is the normality of 10 ml of an acid that took 25 ml of 0.25 N NaOH to reach pH 7?
Wednesday, February 17, 2010 at 1:10pm by David

chem
how many ml of 0.15 m naoh solution are required to neutralize 35.00 ml of 0.22 m hcl
Friday, April 23, 2010 at 12:24am by Anonymous

chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M NaOH with 8.00 mL of the 0.10 M HC2H3O2?
Saturday, April 24, 2010 at 10:41pm by need help please!!!

Chemistry
How much 0.10 M NaOH (in mL) is required to neutralize 8.00 mL of the 0.10 M HC2H3O2?
Sunday, May 2, 2010 at 12:57pm by John

chemistry
What is the pH of the solution created by combining 12.90 mL of the 0.10 M NaOH with 8.00 mL of the 0.10 M HC2H3O2?
Monday, May 3, 2010 at 2:00pm by jc

Chemistry
Is 20.0 mL of 1.0M CH3COOH and 10.0mL of 1.0 M NaOH a buffer solution of 3?
Tuesday, May 4, 2010 at 8:21pm by Anne

Chemistry
Is 50.0 mL of 1.0 M HF and 25.0 mL of 1.0 M NaOH a buffer with an approximate pH of 3? I say yes. Right?
Thursday, May 6, 2010 at 2:13pm by Jim

Chemistry
How many grams of Ni(OH)2 are produced from the reaction of 30.0 mL of 1.75 M NaOH solution?
Monday, May 24, 2010 at 7:11pm by Lynn

Chemistry
what is the net ionic equation for NaOH + H2SeO3?
Saturday, June 19, 2010 at 1:45pm by Ellie

chemistry
What is the concentration of 10g of NaOH dizzolved in 0.95 L of water?
Thursday, October 28, 2010 at 10:14pm by Amber

chem
Calculate the pH after 0.12 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.06 M KF
Friday, February 11, 2011 at 1:01pm by michele

chem
Calculate the pH after 0.12 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.06 M KF
Friday, February 11, 2011 at 2:36pm by michele

chemistry
if i want to change the pH of any solution from 5 to 8 what the volume of NaOH 0.1 N needed
Wednesday, March 9, 2011 at 5:04am by mohamed

chemistry
100ml of 0.05M of NaOH is added to 0.5g of Ca(OH)2. find the [OH] (from Ca(OH)2)
Wednesday, March 23, 2011 at 7:36pm by roshan

chemistry
What would happen if NaOH was added to CuSO4
Wednesday, April 6, 2011 at 6:10pm by Anonymous

chemistry
NaOH(aq)+H3PO4(aq)Na3PO4(pq)+H2O(l) Please help.
Sunday, May 1, 2011 at 12:31pm by Diana

chemistry
What is the molarity of hcl is 35 ml is neutralized. By 500 ml of M NaOH?
Monday, May 23, 2011 at 6:44pm by ray

chemistry
how many moles of NaOH (aq) is contained in 10.0mL of vinegar?
Wednesday, August 31, 2011 at 5:24pm by cleetus

Chemistry
Find the [OH-] of .196 M NaOH and .262 M NH4Cl
Tuesday, June 21, 2011 at 10:29pm by Lilly

CHEMISTRY
Why must an organic layer be washed with NaOH?
Sunday, October 9, 2011 at 2:47pm by Ashley

College Math
Make 300 mL of a 0.4M NaOH solution.
Thursday, October 27, 2011 at 7:44pm by Jane

chemistry
how many mL of 0.15 M NaOH solution are required to neutralize 35.00 mL of 0.22 M HCl
Friday, November 11, 2011 at 12:52am by sonya

chemistry
find Equimolar ratio of HClO2 & NaOH
Wednesday, December 21, 2011 at 4:58am by shyly

Chemistry
How many mL of 5.5 M KOH are needed to prepare 300 mL of 1.2 M NaOH?
Sunday, March 11, 2012 at 6:12pm by Amanda

Chemistry
How many mL of .48 M NaOH are needed to react with 2.00 moles of H3PO4?
Sunday, April 8, 2012 at 9:29pm by Sam

Chemistry
What is the Net Ionic Reaction for NaOH(aq) + H2SO4(aq)-->
Tuesday, May 8, 2012 at 1:15am by Erick

chem
what volume of 1M NaOH is needed for the reaction with 1L of 1M HCl?
Monday, July 30, 2012 at 3:38pm by rick

Math
What is the weight or volume of solute in 5.5% NaOH solution?
Wednesday, October 3, 2012 at 8:16pm by Cheryl

Chemistry
0.3 grams NaOH dissolved in 2.5litres. How many moles?
Saturday, October 27, 2012 at 8:26am by Adrian

chemistry
a 0.01M aqueous NaOH has a hydroxide concentration of ---- M
Friday, November 16, 2012 at 12:36pm by florence

chemistry
balance H2SO4 + NaOH --> H2O + Na2SO4
Tuesday, January 8, 2013 at 8:56am by will.i.am

Chemistry
What coeffients do you need for NaCL+Ca(OH)2=CaCl2+NaOH
Tuesday, January 15, 2013 at 6:23pm by Emilee

chemistry
What volume of 0.1 M NaOH is required to neutralize 30 mL of 0.1 M HCl?
Tuesday, February 12, 2013 at 12:48pm by Anonymous

Chemistry
How many grams of NaOh are needed to prepare 0.5l of a 4m solution?
Monday, June 10, 2013 at 1:02am by Keymaurie

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