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April 17, 2014

Search: A solution of sodium hydroxide is standard-

Number of results: 37,189

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
Wednesday, October 12, 2011 at 1:47pm by Anonymous

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
Wednesday, October 12, 2011 at 1:47pm by Anonymous

chemistry
1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1. a). what would the effect on the pH be of adding 1 gram of sodium hydrogen oxalate to this buffer? b). what would be the effect on the pH of adding 1 gram of sodium oxalate to the original...
Sunday, March 10, 2013 at 10:00pm by Ashley

Chemistry
A volume of 70.0mL of aqueous potassium hydroxide(KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 19.2mL of 1.50M H2SO4 was needed? The equation is 2KOH+H2SO4->K2SO4+2H20
Saturday, September 18, 2010 at 8:15pm by Peter

chemistry
The enthalpy change for the solution process when solid sodium hydroxide dissolves in water is -44.4 kJ/mol. When a 13.6 g sample of NaOH dissolves in 250.0 g of water in a coffee-cup calorimeter, the temperature increases from 23.0 o C to __________ o C. Assume that the ...
Monday, November 15, 2010 at 2:25pm by Anonymous

Chemistry
A student reacts 20.0 grams of sodium hydroxide with hydrochloric acid and obtains 25.0 grams of sodium chloride. What is the percent yield?
Sunday, April 3, 2011 at 7:20pm by Lisa

chemistry
predict the outcome of mixing aqueous solutions of the following reactions. write the ionic equations of each. mercury (ll) nitrate + ammonium iodide manganese (ll) chloride + sodium sulfide lead (ll) nitrate + sodium sulfate barium nitrate + lithium sulfate aluminum sulfate...
Monday, October 3, 2011 at 11:06pm by TROUBLED

chemistry
why is the osmotic pressure of 10 mole solution sodium chloride larger than that of sodium nitrate solution
Monday, May 24, 2010 at 5:58am by taher

Chemistry
a solution is 0.0300 m in Sodium. How many grams of sodium carbonate are necessary to prepare 900.0 ml of this solution? I don't know where to start on this.
Friday, September 28, 2012 at 1:34am by Alex

chemistry
How many moles of excess reactant are present when 3.50 x 10^2 mL of 0.216 M sulfuric acid reacts with 0.510 L of 0.202 M sodium hydroxide to form water and aqueous sodium sulfate?
Saturday, September 19, 2009 at 10:23pm by larry

chemistryhelp
how many moles of excess reactant are present when 3.20 x 10^2 mL of 0.226 M sulfuric acid reacts with 0.531 L of 0.185 M sodium hydroxide to form water and aqueous sodium sulfate
Wednesday, October 2, 2013 at 1:13am by sydney

ap
A ruptured tank in Anywhere, USA, spilled hydrochloric acid. Officials were reported to be concerned that the acid might mix with sodium hydroxide (caustic soda) in a neigh- boring tank and form a toxic gas. What toxic gas would be formed by mixing hydrochloric acid with ...
Monday, October 1, 2012 at 8:38pm by cheri

chemistry
if one had one gallon of sodium hydroxide solution which had a concentration of four gallons of the acid?
Wednesday, June 23, 2010 at 2:57pm by Ana

Chemistry
Acetic acid (HOAc) is a weak acid with a Ka= 1.8 X 10^-5 and sodium hydroxide (NaOH) is a strong base. What is the pH of a solution made by mixing 75.0 ml of a 0.160 M solution NaOH and 25.0 ml of a 0.640 M solution of HOAc? I got a pH of 5.22, but I am not sure if this is ...
Tuesday, May 12, 2009 at 9:53pm by Chelsea

Chemistry
Will a double replacement reaction take place if a solution of sodium hyrdrogen carbonate is added to a solution of sodium chloride?
Thursday, April 21, 2011 at 9:48am by Jes

Chemistry
sodium chloride- NaCl sodium sulfate- Na2SO4 sodium carbonate- Na2CO3 sodium bicarbonate- NaHCO3 sodium bromide- NaBr sodium fluoride-NaF sodium tetrahydroxyborate- Na[B(OH)4]
Friday, January 27, 2012 at 12:06am by DrBob222

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.
Sunday, February 19, 2012 at 4:03pm by Amanda

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.
Sunday, February 19, 2012 at 4:04pm by Amanda

chem--please help me!!
25.00 mL sample of this sulfuric acid solution. You then titrate it with a 0.1322 M potassium hydroxide solution. A volume of 41.22 mL of potassium hydroxide was required to complete the titration. What is the concentration of this unknown sulfuric acid solution?
Saturday, October 30, 2010 at 2:29pm by Anonymous

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
Tuesday, September 6, 2011 at 2:52pm by chemistry

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
Tuesday, September 6, 2011 at 2:59pm by irsha

Chemistry
Sodium metal dissolves in liquid mercury to form a solution called a sodium amalgam. The densities of Na(s) and Hg(l) are 0.97 g/cm3 and 13.6 g/cm3, respectively. A sodium amalgam is made by dissolving 1.0 cm3 Na(s) in 20.0 cm3 Hg(l). Assume that the final volume of the ...
Sunday, December 11, 2011 at 2:56am by bernan

Chmistry
Sodium metal dissolves in liquid mercury to form a solution called a sodium amalgam. The densities of Na(s) and Hg(l) are 0.97 g/cm3 and 13.6 g/cm3, respectively. A sodium amalgam is made by dissolving 1.0 cm3 Na(s) in 20.0 cm3 Hg(l). Assume that the final volume of the ...
Tuesday, December 13, 2011 at 10:55am by bernan

Chemistry(Please check answers)
1)What is the pH of a saturated solution of lead(II) hydroxide? The Ksp= 4.0e-15 Pb(OH)2 4.0e-15 = (x)(2x)^2 = 4x^3 I divided by 4 and took the cube root and got 1.12e-5 but I am not sure I took the cube root correctly. -log(1.12e-5)= 4.95 14-4.95 = 9.05 The answer choices ...
Monday, April 9, 2012 at 4:12pm by Hannah

Chemistry
I have to sort compounds into groups, separating them by if they are acidic, Ionic, or Covalent. Heres the list: Calcium Carbonate Sodium Hypochlorite Sodium Chloride Sodium Hydrogen Carbonate Acetic Acid Ammonium Hydroxide Silicon dioxide Magnesium Sulfate Carbon Dioxide ...
Monday, December 10, 2012 at 9:21pm by Kaylee

Chemistry
when pure sodium hydroxide is dissolved in water , heat is evolved in a laboratory experiment measure a molar heat of solution of sodium hydroxide the following procedure was followed. to a calorimeter containing 300g of water at 20.0 C and 10.65g of NaOH also at 20.0 C was ...
Friday, March 23, 2007 at 8:58am by jim

Chem
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 3.00 g of silver nitrate. How many grams of each of the following compounds are...
Sunday, September 16, 2012 at 11:32pm by Ezra

chemistry
A SOLUTION OF 0.05METER ACID PKA 6.10 IS MIXED WITH AN EQUAL VALUE 0.1 SODIUM SOLUTION OF SODIUM SALT WHAT IS THE PH OF THE FINAL MIXTURE.
Tuesday, March 30, 2010 at 12:25pm by ronke

Chemistry
im almost done with my hw just last six i dont get, i need the molecular, total ionic, and net ionic equations please Aqueous solutions of potassium phosphate and calcium nitrate are mixed .Aqueous solutions of barium chloride and sodium sulfate are mixed. Magnesium is added ...
Thursday, March 4, 2010 at 9:24pm by samantha

chemistry 12
Calculate [H3O] an [OH] for a sodium hydroxide solution having a pH of 12.5. I'm having a hard time with this i'm not sure how to start it. Please help me!
Thursday, October 6, 2011 at 7:15pm by Sarah

Chemistry
Calculate the pH of the solution formed by adding 15.0ml of 0.1M sodium hydroxide to 30.0ml of 0.1M propanoic acid.
Sunday, January 19, 2014 at 6:33pm by Fritz

Chemisty
Calculate the mass of water in grams that could be produced from the reaction of 10.00mL 0.4122M hydrochloric acid and 35.00mL 0.1738M sodium hydroxide solution. Identify the limiting reactant.
Tuesday, February 28, 2012 at 6:48pm by Missy

Chemistry
A volume of 60.0mL of aqueous potassium hydroxide (KOH ) was titrated against a standard solution of sulfuric acid (H 2 SO 4 ). What was the molarity of the KOH solution if 25.7mL of 1.50 M H 2 SO 4 was needed? The equation is 2KOH(aq)+H 2 SO 4 (aq)K 2 SO 4 (aq)+2H 2 O(l)
Thursday, September 26, 2013 at 2:09pm by Sarah

Chemistry
The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?
Friday, June 3, 2011 at 8:54am by Kat

chemistry
what are the hydronium-ion and the hydroxide ion concentration of a solution at 25 C that is 0.0050 M strontium hydroxide, Sr(OH)2? a solution of hydrochloric acid is 0.20 M HCl. What is the hydronium-ion at 25 C? What is the hydroxide ion concentration at 25 C?
Saturday, August 6, 2011 at 3:55pm by Henry

chemistry
A student added 50cm^3 of 1.00 moldm^-3 sulphuric acid to 25cm^3 of 1.00 moldm^-3 sodium hydroxide. Calculate the pH of the solution formed.
Friday, January 4, 2013 at 6:58am by Amy

Chemistry
Calculate the volume of 2.45 M NaI that would be needed to precipitate all of the Hg+2 ion from 185 mL of a 2.44 M Hg(NO3)2. AND Calculate the molarity of an acetic acid solution if 47.81 mL of the solution is needed to neutralize 147 mL of 1.32 M sodium hydroxide.
Monday, May 6, 2013 at 3:52pm by Marsha

Chemistry
what mass in grams of sodium hydroxide is produced if 20.0g of sodium metal reacts with excess water according ro the chemical equation, Na(s)+H2O4->naoh(aq)+h2(g)
Sunday, March 10, 2013 at 11:07pm by Fatima

Chemistry
in this experiment you are you will begin by preparing a dilute soultion of sodium hydroxide by taking 50 ml of 3 M NaOh stock solution and diluting it with 250 ml of water. i found that and the answer was .5 but how do i do this b. calculate the number of moles and grams of ...
Tuesday, February 23, 2010 at 9:48pm by Chris

Chemistry
What will be the pH of an aqueous solution containing 0.040 mol/L sodium hydroxide?? I got 1.40 or 1.398 I rounded the numbers is my answer right??? If not what's the right answer??
Thursday, December 23, 2010 at 9:15pm by Tarkan

Chemistry-iodometric titration
In an iodometric titration, excess potassium iodide solution (KI) is added to the sample.Analyte such as chlorine liberates iodine from KI under acidic condition. Liberated iodine is titrated against standard sodium thiosulphate. The concentration of analyte in the sample is ...
Wednesday, August 4, 2010 at 7:39pm by angela

science
A test solution of sodium acetate is to contain 10 mg/ml of the metal ion. if 750 ml of the solution is needed, how many grams of sodium acetate must be used? What is the molarity of this solution?
Wednesday, April 20, 2011 at 4:44pm by Drez

chemistry
Predict the the product for the following reactions. zinc + hydrochloric acid sulfuric acid + sodium hydroxide sodium + hydrogen acetic acid + coppper
Sunday, December 5, 2010 at 10:12am by Amanda

CHEMISTRY
18cm^3 of 1.0M H2SO4 just reacted with 24cm^3 of 1.5M NaOH to form sodium sulfate & water. Calculate the amounts in moles of sulfuric acid & sodium hydroxide reacting & write an equation for the reaction.
Saturday, October 12, 2013 at 11:31pm by Janey

chemistry
ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of water.is the molarity of each solution the same?
Monday, February 13, 2012 at 10:35pm by wendy

dr bob HELP PLEASE
thanks dr Bob got thru 6 now I am stuck again 1. Hydrochloric acid + Sodium hydroxide > sodium chloride + water 2. Magnesium hydroxide + hydrochloric acid > Magnesium chloride + water
Thursday, December 13, 2007 at 10:26pm by sam

chem buffer
When the following solutions are mixed, which will act as a buffer? (check all that apply) A. 50 mL of 0.05M sodium hydroxide and 50 mL of 0.1M nitrous acid B. 50 mL of 0.1M ammonia and 50 mL of 0.1M ammonium acetate C. 50 mL of 0.1M ammonia and 50 mL of 0.05M nitric acid D. ...
Friday, October 29, 2010 at 3:16pm by janie

organic chemistry
when i add methyl salicylate to aqueous sodium hydroxide, immediately a white solid forms... that is sodium salicylate is it?? Since it hasn't been heating under reflux yet.
Monday, March 18, 2013 at 3:08pm by Anonymous

science
Will you please check a few more? Physical change, chemical change or both kinds of change? 1. Sodium hydroxide dissolves in water (both) 2. Hydrochloric acid reacts with sodium hydroxide to produce a salt, water and heat (chemical) 3. A pellet of sodium is sliced in two (...
Wednesday, September 12, 2012 at 9:58pm by Reed

science
why potassium stock with 10000mg/L is added to the sodium standard solution with 20mg/L during the preparation for aas?
Wednesday, July 27, 2011 at 8:50pm by saymyname

Chemistry
Iron (III) hydroxide is soluble in acid: Fe(OH)3(s)3H^+(aq)-->Fe^3^+(aq)+3H2O(l) a. How many milliliters of 1.00 M HCl are needed to dissolve 1.00 g of iron (III) hydroxide? b. If you added enough HCl to dissolve the 1.00 g of iron (III) hydroxide and then diluted the ...
Sunday, November 11, 2012 at 5:16pm by Kelly

Chemistry
A volume of 40.0 of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 20.2 of 1.50M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)--->K2SO4(aq)+2H2O(l)
Sunday, July 22, 2012 at 11:43pm by Lindsey

chem 12
Calculate [H3O] an [OH] for a sodium hydroxide solution having a pH of 12.5. I know this is a strong base, and i got the pH 12.5. But i don't know how to go from there.
Tuesday, October 11, 2011 at 2:16pm by Sarah

chemistry
The molarity of an aqueous solution of barium hydroxide is determined by titration against a 0.335 M nitric acid solution. If 32.8 mL of the base are required to neutralize 21.5 mL of nitric acid, what is the molarity of the barium hydroxide solution?
Tuesday, April 1, 2014 at 4:32pm by Anonymous

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.
Sunday, July 31, 2011 at 11:24pm by BEE

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.
Monday, August 1, 2011 at 12:04am by BEE

Chemistry
An antacid is the opposite of an acid. Antacids are over the counter medicines (usually) that you take for an acid stomach. Sodium hydroxide is an antacid, too, but it's too much of a good thing since it is very toxic to the system and WAAAAY to strong to swallow. Sodium ...
Friday, April 10, 2009 at 8:40pm by DrBob222

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
Thursday, October 20, 2011 at 6:15pm by patel

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
Thursday, October 20, 2011 at 6:47pm by patel

Biochemistry
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate the volume of hypochlorous acid and sodium hydroxide to use.
Tuesday, March 12, 2013 at 1:05am by Jen

Biochemistry
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate the volume of hypochlorous acid and sodium hydroxide to use.
Wednesday, March 13, 2013 at 4:25am by Jen

Chemistry
Calculate the solid needed to make a 250ml solution that is 0.34M in sodium cation, using sodium sulfate decahydrate. I came up with 13.685g. but how do I make that into 250ml of a solution that is0.34M in sodium cation?
Thursday, October 27, 2011 at 9:41pm by Denise

Science
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
Thursday, September 17, 2009 at 7:09pm by Lauren

AP CHEMISTRY
1) Calculate the molarity of a solution of sodium hydroxide, NaOH,if 23.64 mL of this solution is needed to neutralize 0.5632g of potassium hydrogen phthalate. 2) It is found that 24.68 mL of 0.1165M NaOH is needed to titrate 0.2931 g of an unknown acid to the phenolphthalein ...
Thursday, March 8, 2012 at 6:27pm by HELP PLEASE

chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3) and sodium hydroxide...
Wednesday, July 20, 2011 at 3:59pm by David

chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3) and sodium hydroxide...
Wednesday, July 20, 2011 at 4:01pm by David

holy school
NaHCO3 + HCl ----> NaCl + CO2 + H2 O 150 g of sodium bicarbonate are added to 2 L of water. a. What is the molarity of the sodium bicarbonate solution? b. How many moles of hydrogen chloride would be needed to react with a 35 mL sample of the sodium bicarbonate solution? c...
Sunday, March 3, 2013 at 12:00am by mamta

Organic Chemistry
What is the white solid that quickly forms when the methyl salicylate is added to the sodium hydroxide solution? I know that it is this equation but I wanted to know what is the name of the white solid: HOC6H4COOCH3 + NaOH HOC6H4COO- Na+ + CH3OH
Saturday, April 3, 2010 at 10:43pm by Jonathan

Science
ionic compounds for the following: calcium chloride calcium oxide sodium oxide sodium carbonate aluminium carbonate calcium sulfate sodium nitrate sodium sulfate aluminium oxide aluminium hydroxide
Friday, February 13, 2009 at 5:51am by Alpana

Science
ionic compounds for the following: calcium chloride calcium oxide sodium oxide sodium carbonate aluminium carbonate calcium sulfate sodium nitrate sodium sulfate aluminium oxide aluminium hydroxide
Sunday, February 15, 2009 at 1:10am by Alpana

Chemistry
A sodium selective electrode indicates a 34.2 mV response to a 2.50 x 10-4 M Na+ standard solution. Assuming ideal electrode response, what is the sodium concentration of a sample when the electrode indicates a 35.2 mV response?
Monday, August 12, 2013 at 8:34am by RC

chemistry
Lead ii nitrate was added to a small test tube as well as Sodium hydroxide. What is the equilibrium equation for the reaction of lead ii ions and hydroxide ions?
Thursday, March 31, 2011 at 8:25pm by Keli

chemistry
A student took 100 mL of a solution of Mg(OH)2 and reacted it with HCl (aq) to calculate the concentration of hydroxide ions in the solution. If 13.75 mL of 0.010M HCl was used to react with all of the OH- (aq) in the 100-mL solution, what was the concentration of hydroxide ...
Thursday, October 3, 2013 at 7:13pm by Donna

chemistry
Write the balanced molecular, complete ionic, and net ionic equations for the following reactions in aqueous solution: a. magnesium chloride reacts with potassium carbonate b. sulfuric acid reacts with sodium hydroxide
Thursday, October 13, 2011 at 11:43am by gold

chemistry
If an aqueous solution is 1.54 % by weight in sodium chloride and contains 6.96 g of sodium chloride, what mass of water is present in the solution?
Friday, December 2, 2011 at 1:10am by Seep

chemistry
problem 2 copies straight from my notes a 4.0mg/dL standard solution is needed. To prepare 100mL of the working standard, how much stock standard of a 1mg/mL solution is neeeded ? i emailed her:I didn\t know what is a stock standard , working etc. Stock standard is a standard...
Thursday, January 21, 2010 at 2:45am by Dan_9

Chemistry
What is the molarity of a sodium chloride solution if 31.0 grams of sodium chloride is added to enough water to make 1.84 liters of solution?
Tuesday, January 8, 2008 at 7:51pm by Mitch

hemistry
sodium is manufactured commercially by electrolysis of molten sodium chloride. explain why it is not possible to use sodium chloride solution for this.
Tuesday, March 15, 2011 at 2:00pm by Anonymous

chemistry
sodium is manufactured commercially by electrolysis of molten sodium chloride. explain why it is not possible to use sodium chloride solution for this.
Tuesday, March 15, 2011 at 2:24pm by Anonymous

Chemistry
A solution of potassium hydroxide is in equilibrium with an undissolved solute at 45 degrees Celsius. What will happen to the mass of the potassium hydroxide if the temperature is raised to 50 degrees Celsius? (Given that heat of solution is -57.6kJ/mol)Please explain as well.
Friday, December 14, 2012 at 12:59am by Dayton

Chemistry
Determine the molarity of a sodium hydroxide solution? if 37.34 mL of it are required to neutralize 1.922 g of citric acid. balanced equation- 3NaOH(aq)+H3C6H5O7-->3H2O(l)+NaC6H5O7(aq ***Plesae show steps.
Wednesday, March 7, 2012 at 3:56pm by Cynthia

Chemistry
The pH of a solution is 1. Which of the following statements are also true for the solution? (Select all that apply.) It will change the color of red litmus to blue. The concentration of hydronium ion is equal to the concentration of hydroxide ion. The solution is acidic. It ...
Friday, May 18, 2012 at 12:24pm by Cody

Chemistry
What is the sodium concentration when a solution is formed by mixing 60.0 ml of 0.150 M sodium carbonate with 75.0 ml of 0.225 M sodium bicarbonate?
Monday, October 14, 2013 at 10:04pm by Chelsea

Chemistry- Drbob-help#3
I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A student makes a solution...
Thursday, February 10, 2011 at 12:54am by Paul

Chem
a solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.054 g; buret reading before tiltration 0.33 mL; buret reading after ...
Tuesday, July 13, 2010 at 5:09pm by debbie

CHEMISTRY
a solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.404 g; buret reading before titration 0.13 mL; buret reading after ...
Friday, October 18, 2013 at 7:32pm by maria

chemistry
What volume of 9.54M sodium chloride solution must be added to the correct amount of water to produce 750. mL of a .327 M sodium chloride solution?
Wednesday, November 17, 2010 at 12:44am by Dee

CHEMISTRY
A FALSK CONTAINS 49.8 mL OF 0.150 CALCIUM HYDROXIDE. HOW MANY MILLILITERS OF 0.500 SODIUM CARBONATE ARE REQUIRED TO REACT COMPLETELY WITH THE CALCIUM HYDROXIDE IN THE FOLLOWING REACTION? Na2CO3(aq)+ Ca(OH)2(aq)CaCO3(s)+2NaOH(aq)
Tuesday, October 23, 2012 at 5:34pm by HAMZA

Science
calculate the mass of sodium nitrate in grams in a 150 ml solution of a 5.00 M solution of sodium nitrate
Tuesday, April 19, 2011 at 9:59pm by Stephanie

Chemistry
Lets see. You want to dilute it 20x, so add nineteen parts water to one part sodium hydroxide. Isn't that 190ml water, 10 ml of NaOH? Check that. You can check it by calculating the molarity of the resulting solution.
Thursday, October 25, 2007 at 11:26am by bobpursley

Chemistry
Some solid copper(II) sulfate is dissolved in sufficient water to make 100.0 mL of solution. Enough of a sodium hydroxide solution of concentration 0.1500 mol/L is added just to react with all of the first solution, with none left over. This turns out to be a volume of 47.08 ...
Tuesday, February 22, 2011 at 9:46pm by OLGA

AP Chemistry
A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.234 g; buret reading before titration 0.23 mL; buret reading after ...
Wednesday, September 14, 2011 at 9:26pm by Chandler

Chemistry
When a 5.50g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee cup calorimeter, the temperature of rises from 21.6 degrees C to 37.8 degrees C. Calculate Change of heat for the reaction in kJ (also in kJ/mol NaOH) for the solution process. Assume the ...
Monday, October 10, 2011 at 7:43pm by Jennifer

Chemistry
If aqueous hydrofluoric acid is reacted with sodium hydroxide, which of the following substances are in the net ionic equation? 1. hydrofluoric acid, hydroxide ion, hydronium ion, fluoride ion, and water 2. hydrofluoric acid, sodium ion, hydroxide ion, ...
Sunday, September 22, 2013 at 3:19pm by Adam

chemistry
If chlorine gas is bubbled through an aqueous solution of sodium iodide, the result is elemental iodine and aqueous sodium chloride solution. What kind of reaction took place?
Wednesday, July 3, 2013 at 9:28am by LDonta

Chemistry
A 205 mg sample of a diprotic acid is dissolved in enough water to make 250.0 ml of solution. The pH of this solution is 2.15. A saturated solution of calcium hydroxide (Ksp= 1.3 x 10-6) is prepared by adding excess calcium hydroxide to water and then removing the undissolved ...
Monday, February 25, 2013 at 6:27pm by Summer

Chemistry
A volume of 50.0 mL of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid. What was the molarity of the KOH solution if 19.2 mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq) +H2SO4(aq)- K2SO4(aq)+2H2O(l)
Sunday, October 3, 2010 at 4:24pm by Ellen

Chemistry
E) H2SO4 + NaOH = H2SO4+ 2NaOH --> 2H2O + Na2SO4 About the last 2 in Na2SO4, It should be a coefficient right? Not a subscript. Reactants: Sulphic acid, sodium hydroxide Products: Sodium sulphate, water
Monday, July 12, 2010 at 10:06pm by Derrick

Chemistry
The Ksp for a certain metal hydroxide, M(OH)2 (molar mass = 127) is 3.5 10-19. What is the pH for a saturated solution of this hydroxide? Confused on how to set up this problem...
Sunday, April 3, 2011 at 10:43pm by Dan

Science -- same q, dont reply if you dont know!
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
Thursday, September 17, 2009 at 7:14pm by Lauren

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