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The molality of X% H(2) SO(4) solution i...

The molality of `X% H_(2) SO_(4)` solution is equal to 9. The weight of the solvent present in the solution is 910g.The value of 'X' is : `90, 80.3, 40.13, 9`

A

90

B

`80.3`

C

`40.13`

D

`9`

Text Solution

Verified by Experts

The correct Answer is:
B
Molality `= ( 100 xx "Weight of solute")/("Mol mass of solute" xx "Weight of solvent")`
`q = (1000 xx w)/(98 xx 910) w = 802.6 g L ^(-1) = 80.26 g per 100 mL`
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