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One litre hard water contains 12.00 mg M...

One litre hard water contains 12.00 mg `Mg^(2+)` millieqivalent of washing soda required to remove its hardness is

A

1

B

`12.15`

C

`1xx10^(-3)`

D

`12.15xx10^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Meq of `Mg^(+2) equiv` Meq of washing soda
`W/Exx1000=Mg^(+2), EW=24/2=12 implies (12xx10^(-3))/12xx1000=1`.
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