# is a weak base and so the salt acts as a weak acid. What is the pH of a solution that is 0.029 M...

## Question:

{eq}NH_3 {/eq} is a weak base ({eq}K_b=1.8x10^{-5} {/eq}) and so the salt {eq}NH_4Cl {/eq} acts as a weak acid. What is the pH of a solution that is 0.029 M in {eq}NH_4Cl {/eq} at {eq}25^oC {/eq}?

pH=_____

HClO is a weak acid ({eq}K_a=4.0x10^{-8} {/eq}) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.010 M in NaClO at {eq}25^oC {/eq}?

pH=_____

If a buffer solution is 0.260 M in a weak acid ({eq}K_a=6.6x10^{-5} {/eq}) and 0.460 M in its conjugate base, wha is the pH?

pH=_____

## Buffer Solution:

Buffer Solution is a solution the pH of which does not vary with the addition of acids or bases. A buffer is formed when a weak acid is present in a solution with its own salt formed with a strong base

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#### Part 1

{eq}NH^+ + H_2O <-> NH_4OH + H^{+} {/eq}

Let h be the degree of hydrolysis of ammonium ion and c be its concentration.

{eq}K_h =...