Question

1.This question has multiple parts. Work all the parts to get the most points.

a	In each of the following sets of ionic compounds, identify the members of the set that are soluble in water. (Select all that apply.) NH4I NH4HCO3 NH4NO2 NH4NO3
b		(Select all that apply.) NaCH3COO AgCH3COO Cu(CH3COO)2 Cr(CH3COO)3

c	(Select all that apply.) CaBr2 Ca(OH)2 CaSO4 CaCl2
d		(Select all that apply.) Ca(NO3)2 CaSO4 CaCO3 Ca3(PO4)2

2.Calculate the mass percent of solute in the following solutions.

(a) 8.94 g of NaCl dissolved in 55.5 g of H2O	%
(b) 3.52 g of LiBr dissolved in 38.6 g of H2O	%
(c) 14.4 g of KNO3 dissolved in 260 g of H2O	%
(d) 2.6×10-3 g of NaOH dissolved in 3.8 g of H2O	%

3.How many grams of water must be added to 49.5 g of NaOH in order to prepare a 6.73%(m/m) solution?

grams of water

4.Calculate the volume percent of 495 mL of acetone in enough water to give 1.07×10³ mL of solution.

%(v/v)

5.How many grams of Na₂CO₃ are needed to prepare 49.5 mL of a 4.27%(m/v) Na₂CO₃ solution?

grams of Na₂CO₃

6.For each of the following solutions, calculate the molarity of the solution.

9.87 g MgNH₄PO₄ in 750. mL solution

mol/L

19.1 g NaCH₃COO in 600. mL solution

mol/L

6.64 g CaC₂O₄ in 300. mL solution

mol/L

5.58 g (NH₄)₂SO₄ in 500. mL solution

mol/L

7.Calculate the number of grams of solute in each of the following solutions.

(a) 4.95 L of a 2.44 M HCl solution	grams of HCl
(b) 38.0 mL of a 12.5 M HNO3 solution	grams of HNO3
(c) 50.7 mL of a 10.4 M AgNO3 solution	grams of AgNO3
(d) 1.77 L of a 6.3×10-3 M Na2SO4 solution	grams of Na2SO4

8.Calculate the mass-volume percent concentration for a 8.9 M NaOH solution.

%

9.What is the molarity of the solution prepared by diluting 35.0 mL of 1.25 M AgNO₃ to each of the following final volumes?

69.6 mL

M

84.9 mL

M

810 mL

M

2.57 L