Question

what is the pH of a 0.15 M solution of weak acid Ammonium bromide? The Kb value for Ammonia is
$1.8 \times {10 }^{ - 5}$
​

Answer 1

Answer:

Our goal here is to find the hydrogen ion concentration in order to solve for pH. So from

K

b

we need to solve for

K

a

using the equation.

K

a

=

K

w

K

b

After that from

K

a

we can solve for the hydrogen ion concentration.

K

a

=

[

H

+

]

[

A

−

]

[

H

A

]

Since

[

H

+

]

is just equal to

[

A

−

]

the equation becomes

Step-by-step explanation:

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