0.023 g of sodium metal is reacted with 100 cm3 of water. The pH of the resulting solution is
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a
10
b
11
c
9
d
12
answer is D.
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Detailed Solution
2Na+2H2O⟶2NaOH+H2 2 mol 2 mol 2 mol For Na,n=0.02323=10−3mol ∵ therefore the no.of moles of NaOH is also 10-3 molarity = no.of moles of solutevolume of solution in litres POH=2, hence PH= 12