### A Calculate the pH of a 0.10 M solution of barium hydroxide, Ba(OH)2. Express your answer numerically using two decimal places.

A

Calculate the pH of a 0.10 *M* solution of barium hydroxide, Ba(OH)2. Express your answer numerically using two decimal places.

B

Calculate the pH of a 0.10 *M* solution of NaOH.

Express your answer numerically using two decimal places.

C

Calculate the pH of a 0.10 *M* solution of hydrazine, N2H4. *K**b* for hydrazine is 1.3Ã—10âˆ’6.

Express your answer numerically using two decimal places.

D

Calculate the pH of a 0.10 *M* solution of hypochlorous acid, HOCl. *K**a* of HOCl is 3.5Ã—10âˆ’8.

Express your answer numerically using two decimal places.

E

Calculate the pH of a 0.10 *M* solution of HCl.

Express your answer numerically using two decimal places.

2)

Ammonia, NH3, is a weak base with a *K*b value of 1.8Ã—10^âˆ’5.

**Part A**

What is the pH of a 0.425 *M* ammonia solution?

Express your answer numerically to two decimal places.

**Part B**

What is the percent ionization of ammonia at this concentration?

Express your answer with the appropriate units.

3)

**Part A**

If *K*b for NX3 is 3.5Ã—10^{âˆ’6}, what is the pOH of a 0.175 *M* aqueous solution of NX3?

Express your answer numerically.

**Part B**

If *K*b for NX3 is 3.5Ã—10^{âˆ’6}, what is the percent ionization of a 0.325 *M* aqueous solution of NX3?

Express your answer numerically to three significant figures.

**Part C**

If *K*b for NX3 is 3.5Ã—10^{âˆ’6} , what is the the p*K*a for the following reaction?

HNX3+(aq)+H2O(l)â‡ŒNX3(aq)+H3O+(aq)

Express your answer numerically to two decimal places.

4)

For each strong base solution, determine [H3O+],[OHâˆ’], pH, and pOH.

**Part A**

8.86Ã—10^{âˆ’3} M LiOH

Express your answer using three significant figures. Enter your answers numerically separated by a comma.

**Part B**

8.86Ã—10^{âˆ’3} M LiOH

Express your answer to three decimal places. Enter your answers numerically separated by a comma.

**Part C**

1.10Ã—10^{âˆ’2} M Ba(OH)2

Express your answer using three significant figures. Enter your answers numerically separated by a comma.

**Part D**

1.10Ã—10^{âˆ’2} M Ba(OH)2

Express your answer to three decimal places. Enter your answers numerically separated by a comma.

5)

A

What is the conjugate base of HCO3âˆ’?

Express your answer as a chemical formula.

B

What is the conjugate acid of HPO42âˆ’ ?

Express your answer as a chemical formula.

6)

Determine the pH of each solution.

**Part A**

0.20 M KCHO2

Express your answer to two decimal places.

**Part B**

0.21 M CH3NH3I

Express your answer to two decimal places.

**Part C**

0.22 M KI

Express your answer to two decimal places.

Sasha Henry
20-Feb-2020