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What volume of 0.1 M Ca(OH)(2) will be r...

What volume of 0.1 M `Ca(OH)_(2)` will be required to neutralise 200 " mL of " 0.2 M `H_(2)SO_(3)` using methyl orange indicator to change the colour from red (acidic medium) to yello (basic medium)?

A

`200 mL`

B

`400 mL`

C

`20 mL`

D

`40 mL`

Text Solution

Verified by Experts

The correct Answer is:
A
Methyl orange indicator indicates the first step ionisation of `H_(2)SO_(3)`
`Ca(OH)-=H_(2)SO_(3)`
`N_(1)xxV_(1)-=N_(2)xxV_(2)`
`0.1xx2xxV_(1)=0.2xx1xx2`
`V_(1)=200mL`
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