1.

A base dissolved, in water yields a solution with a hydroxyl ion concentration of 0.5 mol "litre"^(-1). The solution is

Answer»

Basic
Acid
Neutral
Either (B) or (C)

Solution :`[OH^(-)] = 0.05 = 5 xx 10^(-2) M`
`pOH = 2 log 5 = 1.3`
`pH + pOH = 14 rArr pH = 14-1.3 = 12.7`.


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