chemistry help? finding pH of a mixture?

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JimmyLewis

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what would be the pH of a solution made by mixing 0.1M NH3 and 0.1M NH4.

the Kb of NH3 is 1.8x10 -5
******NH4+ salt
 
well you can see that there is a conjugate acid and base pair. you know the value of Kb and the molarities are the same, so you can find the Ka value.

The K value of water is 1.00 x 10-14 so just divide that by Kb to find Ka. Since the molarities of the two are equal pH=-logKa
 
well you can see that there is a conjugate acid and base pair. you know the value of Kb and the molarities are the same, so you can find the Ka value.

The K value of water is 1.00 x 10-14 so just divide that by Kb to find Ka. Since the molarities of the two are equal pH=-logKa
 
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