Q.

Statement-I: The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid.

Statement-II: Hydrogen sulphide is a weak acid

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a

Both statement-I and Statement-II are incorrect

b

Both Statement-I and Statement-II are correct

c

Statement-I is incorrect and Statement-II is correct

d

Statement-I is correct and Statement-II is incorrect

answer is A.

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Detailed Solution

HCl gives the common H+ ions and hence ionization equilibrium H2S⇔2H++S-2 is suppressed.

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Statement-I: The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid.Statement-II: Hydrogen sulphide is a weak acid