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  • Tell me? What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed ?

What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed ?

  • Option 1)

    12.65

  • Option 2)

    2.0

  • Option 3)

    7.0

  • Option 4)

    1.04

 

Answers (1)

best_answer

As we learnt in concept

Value of p(H) -

Acidic solution has p(H)  < 7

Basic solution has  p(H)  > 7

Neutral solution has p(H) = 7

-

 

 Let volume of each solution be 1L

moles of NaOH=0.1ml

moles of HCl=0.01ml

moles of NaoH left after mixing =0.09ml

Malarity =normality (as n=1)=\frac{0.09}{2}=0.045 M\:or\: 0.045N

POH=-log (0.045) =1.35 PH=14-POH=14-1.35=12.65


Option 1)

12.65

This Solution is correct 

Option 2)

2.0

This Solution is incorrect 

Option 3)

7.0

This Solution is incorrect 

Option 4)

1.04

This Solution is incorrect 

Posted by

Plabita

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