a. What is the name of Hg₂Cr₂O₇•4H₂O?

 

• mercury (II) chromate tetrahydrate

 

• mercury (I) chromate tetrahydrate

 

• mercury (I) dichromate tetrahydrate

 

• mercury (II) dichromate tetrahydrate

 

b. Which of the following best describes the electron geometry of PO₃^3-?

 

1. linear

 

1. tetrahedral

 

1. bent

 

1. trigonal pyamidal

 

c. A chemist titrates a solution of benzoic acid (C₆H₅COOH) with barium hydroxide. The titration reaction is an example of a . . .

 

1. strong acid reacting with a weak base.

 

1. weak acid reacting with a strong base.

 

1. strong acid reacting with a strong base.

 

1. weak acid reacting with a weak base.

 

d. Calculate the Molarity of 3.0 % (m/m) NaOH solution if the solution density = 1.05 g/mL.

 

1. 0.075 M

 

1. 0.71 M

 

1. 0.79 M

 

1. 0.32 M

 

e. Aqueous silver nitrate is reacted with aqueous sodium phosphate in a double replacement reaction. What is the overall balanced equation for this reaction?

 

1. 3AgNO₃(aq) + Na₃PO₄(aq) à Ag₃PO₄(s) + 3NaNO₃(aq)

 

1. AgNO₃(aq) + NaPO₄(aq) à AgPO₄(aq) + NaNO₃(s)

 

1. 3AgNO₃(aq) + 3NaPO₄(aq) à 3AgPO₄(s) + 3NaNO₃(aq)

 

1. AgNO₃(aq) + Na₃PO₄(aq) à Ag₃PO₄(s) + NaNO₃(aq)

 

1.   

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