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A 1000 gram sample of NaOH contains 3 mo...

A 1000 gram sample of `NaOH` contains 3 mole of `O` atoms, what is the `%` purity of `NaOH` :

A

`14%`

B

`100%`

C

`12%`

D

`24%`

Text Solution

Verified by Experts

The correct Answer is:
C
`NaOH` contain 3 mole of `O` atoms
so mole of `NaOH = 3 mol`
wt of `NaOH = 3 xx 40 = 120g`
`%` purity `= (120)/(1000) xx 100 = 12%` .
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