Q.

Calculate the pH of solution obtained by mixing 10 ml of 0.1 M HCl and 40 ml of 0.2 M H2SO4

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a

0.3685

b

0.4685

c

1.3685

d

1.4684

answer is B.

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Detailed Solution

Milliequivalent of H+ from HCl = 10 x 0.1 = 1Milliequivalent of H+ from H2SO4 = 40 x 0.2 x 2 = 16Total Meq of H+ in solution = 1 + 16  = 17H+ = 1750 = 3.4× 10-1∴H+=MeqV in ml pH=-logH+=-log0.34=0.4685
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