What is the pH of a solution that is 0.10 M KNO2 and 0.15 M HNO2?...

What is the pH of a solution that is 0.10 M KNO2 and 0.15 M HNO2? (Common ion)

Expert Solution

According to Henderson's Equation ,

Given [salt] = [KNO2] = 0.10 M

[ acid] = [ HNO2] = 0.15 M

Acid dissociation constant for HNO2 is Ka = 4.3 x 10^-4

pKa = - log Ka

= - log( 4.3 x 10^-4 )

= 4 - log 4.3

= 3.37

PLug these values in the above equation we get

pH = 3.19

Therefore the pH of the resulting solution is 3.19

queen_honey_blossom answered 2 weeks ago

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What is the pH of a solution that is 0.10 M KNO2 and 0.15 M HNO2?...

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