4&5 4) A student accidentally creates a solution of unknown concentration by adding 475.0 mLof water to 25.0 mL of 0.844 M sodium sulfate solution. Calculate the concentration ofthis unknown solution.Determine the type of problem (straight stoichiometry, straight limiting reagent,determine molarity,dilution, titration (acid/base, precipitation). Explain your reasoning.5) When 38.0 mL of 0.1250 M H2SO4 is added to 100. mL of a solution of Pb(NO3)2, aprecipitate of PbS04 forms. The PbSO4 is then filtered from the solution, dried, andweighed. If the recovered PbSO4 is found to have a mass of 0.0471 g, what was theconcentration of nitrate ions in the original solution?Determine the type of problem (straight stoichiometry, straight limiting reagent,determine molarity, dilution, titration (acid/base, precipitation). Explain your reasoning.

Q4) [Na2SO4] = 0.844 M Volume of…

Answered: A student accidentally creates a…

A student accidentally creates a solution of unknown concentration by adding 475.0 mL of water to 25.0 mL of 0.844 M sodium sulfate solution. Calculate the concentration of this unknown solution.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.104QE: A 10.00-mL sample of a 24.00% solution of ammonium bromide (NH4Br) requires 23.41 mL of 1.200 molar...

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Question

4&5

4) A student accidentally creates a solution of unknown concentration by adding 475.0 mL
of water to 25.0 mL of 0.844 M sodium sulfate solution. Calculate the concentration of
this unknown solution.
Determine the type of problem (straight stoichiometry, straight limiting reagent,
determine molarity,dilution, titration (acid/base, precipitation). Explain your reasoning.
5) When 38.0 mL of 0.1250 M H2SO4 is added to 100. mL of a solution of Pb(NO3)2, a
precipitate of PbS04 forms. The PbSO4 is then filtered from the solution, dried, and
weighed. If the recovered PbSO4 is found to have a mass of 0.0471 g, what was the
concentration of nitrate ions in the original solution?
Determine the type of problem (straight stoichiometry, straight limiting reagent,
determine molarity, dilution, titration (acid/base, precipitation). Explain your reasoning.

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