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One litre hard water contains 12.00 mg M...

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

A

1

B

`12.16`

C

`1 xx 10^(-3)`

D

`12.16 xx 10^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A

12 g or 12000 mg of `Mg^(+)` = 1000 millieq
` therefore `. 12 mg Mg = 1 millieq. `Na_2 CO_3`
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