Chemistry HW Help!

[kevin0788]

Hi, i have 2 questions about my chemistry homework i can not figure out
The first question is:

1)Silver ions can be precipitated from an aqueous solutions by the addition of aqueous chloride:

Ag+(aq) + Cl-(aq) ---->AgCl(s)

Silver chloride is virtualy insoluble in water so that the reaction appears to go to completion. How many grams of solid NaCl must be added to 25.0mL of 0.326 M AgNo3 solution to completely precititate the silver?

The second question is:

2) A 31.5 mL aliquot of H2SO4(aq) of unknown concentration was titrated with 0.0134 M NaOH(aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was_____. (be sure to write a balanced chemical equation for the neutralization reaction.)

I already balanced the equation.

H2SO4 + 2NaOH ------> Na2SO4 + 2H2O


Can anybody tell me how to go about solving either of these questions?
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution

[Borek]

Basically both questions are simple stoichiometry with moles/mass and volume/moles conversions.

Ag+(aq) + Cl-(aq) ---->AgCl(s)

Silver chloride is virtualy insoluble in water so that the reaction appears to go to completion. How many grams of solid NaCl must be added to 25.0mL of 0.326 M AgNo3 solution to completely precititate the silver?

How many moles of silver? How many moles of chloride needed? What mass?

2) A 31.5 mL aliquot of H2SO4(aq) of unknown concentration was titrated with 0.0134 M NaOH(aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was_____. (be sure to write a balanced chemical equation for the neutralization reaction.)

http://www.titrations.info/titration-calculation

--
chemical calculators (http://www.chembuddy.com) - buffer calculator (http://www.chembuddy.com/?left=Buffer-Maker&right=buffer-calculator), concentration calculator (http://www.chembuddy.com/?left=CASC&right=concentration_and_solution_calculator)
www.titrations.info (http://www.titrations.info) - all about titration (http://www.titrations.info) methods

[kevin0788]

Hi, i have 2 questions about my chemistry homework i can not figure out
The first question is:

1)Silver ions can be precipitated from an aqueous solutions by the addition of aqueous chloride:

Ag+(aq) + Cl-(aq) ---->AgCl(s)

Silver chloride is virtualy insoluble in water so that the reaction appears to go to completion. How many grams of solid NaCl must be added to 25.0mL of 0.326 M AgNo3 solution to completely precititate the silver?

The second question is:

2) A 31.5 mL aliquot of H2SO4(aq) of unknown concentration was titrated with 0.0134 M NaOH(aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was_____. (be sure to write a balanced chemical equation for the neutralization reaction.)

I already balanced the equation.

H2SO4 + 2NaOH ------> Na2SO4 + 2H2O


Can anybody tell me how to go about solving either of these questions?

[Borek]

You have already asked this questions and you were already given hints:

http://www.physicsforums.com/showthread.php?t=354433