Ch.5 - Introduction to Solutions and Aqueous Solutions

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Tro 5th Edition

Ch.5 - Introduction to Solutions and Aqueous Solutions

Problem 9

We prepare a solution by mixing 0.10 L of 0.12 M sodium chloride with 0.23 L of a 0.18 M MgCl2 solution. What volume of a 0.20 M silver nitrate solution is needed to precipitate all the Cl- ions in the solution as AgCl?

Problem 21a,b

Calculate the molarity of each solution.

a. 3.25 mol of LiCl in 2.78 L solution

b. 28.33 g C₆H₁₂O₆ in 1.28 L of solution

Problem 21c

Calculate the molarity of each solution.

c. 32.4 mg NaCl in 122.4 mL of solution

Problem 24a

what is the molarity of Cl^- in each solution? a. 0.200 M NaCl

Problem 24b

What is the molarity of Cl^- in each solution? b. 0.150 M SrCl₂

Problem 24c

what is the molarity of Cl^- in each solution? c. 0.100 M AlCl₃

Problem 25a

How many moles of KCl are contained in each solution? a. 0.556 L of a 2.3 M KCl solution

Problem 26a

What volume of 0.200 M ethanol solution contains each amount in moles of ethanol? a. 0.45 mol ethanol

Problem 26c

What volume of 0.200 M ethanol solution contains each amount in moles of ethanol? c. 1.2⨉10^-2 mol ethanol

Problem 27

A laboratory procedure calls for making 400.0 mL of a 1.1 M NaNO₃ solution. What mass of NaNO₃ (in g) is needed?

Problem 28

A chemist wants to make 5.5 L of a 0.300 M CaCl₂ solution. What mass of CaCl₂ (in g) should the chemist use?

Problem 29

If 123 mL of a 1.1 M glucose solution is diluted to 500.0 mL, what is the molarity of the diluted solution?

Problem 30

If 3.5 L of a 4.8 M SrCl₂solution is diluted to 45 L, what is the molarity of the diluted solution?

Problem 31

To what volume should you dilute 50.0 mL of a 12 M stock HNO₃ solution to obtain a 0.100 M HNO₃ solution?

Problem 36

What is the molarity of ZnCl₂ that forms when 25.0 g of zinc completely reacts with CuCl₂ according to the following reaction? Assume a final volume of 275 mL. Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)

Problem 37

A 25.0-mL sample of a 1.20 M potassium chloride solution is mixed with 15.0 mL of a 0.900 M lead(II) nitrate solution and this precipitation reaction occurs: 2 KCl(aq) + Pb(NO3)2(aq) → PbCl2(s) + 2 KNO3(aq). The solid PbCl2 is collected, dried, and found to have a mass of 2.45 g. Determine the limiting reactant and the theoretical yield.

Problem 37c

A 25.0-mL sample of a 1.20 M potassium chloride solution is mixed with 15.0 mL of a 0.900 M lead(II) nitrate solution and this precipitation reaction occurs: 2 KCl(aq) + Pb(NO₃)₂(aq) → PbCl₂(s) + 2 KNO₃(aq) The solid PbCl₂ is collected, dried, and found to have a mass of 2.45 g. Determine the the percent yield.

Problem 38

A 55.0-mL sample of a 0.102 M potassium sulfate solution is mixed with 35.0 mL of a 0.114 M lead(II) acetate solution and this precipitation reaction occurs: K₂SO₄(aq) + Pb(C₂H₃O₂)₂(aq) → 2 KC₂H₃O₂(aq) + PbSO₄(s) The solid PbSO₄ is collected, dried, and found to have a mass of 1.01 g. Determine the limiting reactant, theoretical yield, percent yield.

Problem 39

For each compound (all water soluble), would you expect the resulting aqueous solution to conduct electrical current? a. CsCl b. CH₃OH c. Ca(NO₂)₂ d. C₆H₁₂O₆

Problem 40

Classify each compound as a strong electrolyte or nonelectrolyte. a. MgBr₂ b. C₁₂H₂₂O₁₁ c. Na₂CO₃d. KOH

Problem 41

Determine whether each compound is soluble or insoluble. If the compound is soluble, list the ions present in solution. a. AgNO₃ b. Pb(C₂H₃O₂)₂ c. KNO₃ d. (NH₄)₂S

Problem 42

Determine whether each compound is soluble or insoluble. If the compound is soluble, list the ions present in solution. a. AgI b. Cu₃(PO₄)₂ c. CoCO₃ d. K₃PO₄

Problem 43

Complete and balance the following equation. If no reaction occurs, write “NO REACTION.” NaOH(aq) + FeCl3(aq) → ?

Problem 43a

Complete and balance each equation. If no reaction occurs, write 'NO REACTION.' a. LiI(aq) + BaS(aq)

Problem 43b

Complete and balance each equation. If no reaction occurs, write 'NO REACTION.' b. KCl(aq) + CaS(aq) →

Problem 43c

Complete and balance each equation. If no reaction occurs, write 'NO REACTION.' c. CrBr₂(aq) + Na₂CO₃(aq) →

Problem 44

Complete and balance each equation. If no reaction occurs, write “NO REACTION.” b. NaCl(aq) + Hg2(C2H3O2)2(aq) → c. (NH4)2SO4(aq) + SrCl2(aq) →

Problem 44a

Complete and balance each equation. If no reaction occurs, write 'NO REACTION.' a. NaNO₃(aq) + KCl(aq) →

Problem 45

Write a molecular equation for the precipitation reaction that occurs (if any) when each pair of aqueous solutions is mixed. If no reaction occurs, write “NO REACTION.” 1. lithium sulfate and lead(II) acetate 2. strontium nitrate and potassium iodide

Problem 45a

Write a molecular equation for the precipitation reaction that occurs (if any) when each pair of aqueous solutions is mixed. If no reaction occurs, write 'NO REACTION.' a. potassium carbonate and lead(II) nitrate