Answers

2014-06-10T20:13:00+05:30
Concentration of hydrogen=10⁻¹°
concentration of hydroxyl ion =10⁻⁴
10⁻⁴=no.of moles/0.5L
no.of moles=10⁻⁴*0.5
                =1/20000
mass=(1/20000)*40=1/500=0.002g
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