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Which of the following has pH is equal t...

Which of the following has `pH` is equal to near about one?

A

`100ml M/10HCl+100ml M/10NaOH`

B

`55ml M/10HCl+44ml M/10NaOH`

C

`10ml M/10HCl+90ml M/15NaOH`

D

`10ml M/10HCl+90ml M/10NaOH`

Text Solution

Verified by Experts

The correct Answer is:
D
`25 ml M/5` NaOH will be neutralise `25ml M/5 HCl`.
Hence, 50ml `M/5 HCl` get rest and to the mixing of both solution will give total 100ml volume.
`N_(1)V_(1)=N_(2)V_(2)`
`50 xx N/5=N_(2) xx 100`
`N_(2)=(50 xx N)/(5 xx 100) =.1" Hence ,pH=1"`
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