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Buffer Solution A was produced by adding HCHO2 and NaCHO2 in water to give a solution...

Buffer Solution A was produced by adding HCHO2 and NaCHO2 in water to give a solution with [HCHO2] = 1.0 M and [NaCHO2] = 1.0 M in a 1.00 L solution.

5.0 g of NaOH was then added to the 1.00 L solution. Select all the statements that are true after the addition of NaOH.

1. the [HCHO2] will be less than 1.0 M

2. the pH will increase

3. the [CHO2-] will be equal to 1.0 M

4. the [HCHO2] will be equal to the [CHO2-]

5. the [CHO2-] will be greater than 1.0 M

6. the pH will be unchanged

7. the [HCHO2] will be greater than 1.0 M

8. the [CHO2-] will be less than 1.0 M

9. the [HCHO2] will be equal to 1.0 M

10. the pH will decrease

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