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3.0 molal NaOH solution has a density of...

`3.0` molal `NaOH` solution has a density of `1.110 g//mL`. The molarity of the solution is:

A

`2.9732`

B

`3.05`

C

`3.64`

D

`3.0504`

Text Solution

Verified by Experts

The correct Answer is:
A
Total mass of solution `= 1000 g +120g`
`= 1120g`
`d = ("mass")/("volume") rArr 1.11 = (1120)/(V)`
`V = (1120)/(1.11) rArr V = 1009 ml`
`M = (3)/(1009) xx 1000 = 2.9732`
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