When 25.0 mL of 0.200 M hydrochloric acid and 25.0 mL of 0.200 M ammonia are...

Question

Question

When 25.0 mL of 0.200 M hydrochloric acid and 25.0 mL of 0.200 M ammonia are combined, the pH of the resulting solution will be : ...

.. A. Less than 7

B. Equal to 7

C. Greater than 7

science chemistry

Answer 1

Answer #1

A:- A. Less than 7

=> 25.0 mL of 0.200 M hydrochloric acid (strong acid) and 25.0 mL of 0.200 M ammonia (weak base)

Acid-base titrations:

Strong acid (HCl) + Weak base (NH4OH) => pH is less than 7

Weak acid (HCN) + Strong base (NaOH) => pH is greater than 7

Strong acid (HCl) + Strong base (NaOH) => pH is equal to 7

Weak acid (HCN) + Weak base (NH4OH) => pH is equal to 7

Answer 2

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