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The pH of aqueous NaOH is 13. What weigh...

The pH of aqueous NaOH is 13. What weight of solute is present in 500 ml solution ?

Text Solution

Verified by Experts

Given pH = 13, pOH = 14 - 13 = 1,
`[OH^(-)] = [NaOH] = 10^(-1)=0.1 M`
Gram molecular mass (GMW) of NaOH = `40 g mol^(-1)`
Weight of solute present in IL solution=`M xx GMV =(1)/( 10 ) xx 40 =4`
The weight of NaOH present in 500 ml solution = 2 grams.
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