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The ph of a mixture of 0.01m hcl and 0.1m ch3cooh os approximately?

The ph of a mixture of 0.01m hcl and 0.1m ch3cooh os approximately?

Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
0.01M Hcl and 0.1M CH3COOH is Given 
So H+  in HCl will be 10-2 and also in CH​3COOH is 10-1 
Let volume of HCl and CH3COOH be V 
According to formula H+ =N1V1 + N2V2/ total volume 
here N1=1* 10-2 and N2=1*10-1 
so by putting in formula,
H+= 10-2* V +10-1* V/2V

H​+=11*10-2/2

H+= 5.5 * 10-2

So, PH= - log[H+] 

Therefore  PH= - log[5.5 * 10-2]

PH=2- log 5.5
PH=2-0.74 
PH=1.26

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