Ch. 15  solution                       test                   35 points                                   chemistry

In problems involving any calculation, show your work in an organized manner, include (i) any relevant equation (or formula), (ii) conversion factor(s), (iii) put the proper units in your calculations and answer, and (iv) have the proper number of significant figures in your answer.

1. Solve  [15 points]

a.  A 55 mL aqueous solution of HCl is titrated / neutralized by 10.0 mL 75.0 mM NaOH; what is the [HCl] ? 

b. The addition of excess sodium chloride added to a 45 mL aqueous solution of silver nitrate, forms 1.0 g of a precipitate; what is [silver ion] ?

c.  25 mL H3PO4 was titrated / neutralized by 10.0 mL of 75 mM Mg(OH)2; what is the [H3PO4] ?

2. How to prepare 125 mL of 35 mM glucose, C6H12O6 using __.  [10 points]

a. Solid glucose and water

b. 300.0 mM glucose

3. Solve  [10 points]

a. What is the % NaCl in a solution containing 5.0 g NaCl and 75 g water ?

b. What is the molarity of a 100.0 mL solution containing 2.0 gram of sodium hydroxide ?