Q.

A 1 M aqueous solution of which molecule has the lowest pH?

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a

HOCl

b

H2SO3

c

H3PO4

d

H2SO4

answer is D.

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Detailed Solution

H2SO4 is the most acidic.

Therefore the pH value of sulfuric acid H2SO4 is lowest among all.

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A 1 M aqueous solution of which molecule has the lowest pH?