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When 20 mL M//20 NaOH is added to 10 ml ...

When 20 mL `M//20` NaOH is added to 10 ml of `M//10` HCl. The resulting has pH

A

`lt7`

B

`=7`

C

`gt7`

D

`~~2`

Text Solution

Verified by Experts

The correct Answer is:
B
Millimoles of HCl `=(1)/(20)xx 10 =1`
Millimoles of NaOH `=(1)/(10)xx10=1`
Since millimoles are equal, the resulting solution is neutral and has pH `=7`
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