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In acid rain , SO(2) accounts by ....

In acid rain , `SO_(2)` accounts by .

A

1

B

0.3

C

0.5

D

0.7

Text Solution

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The correct Answer is:
D
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In atmosphere, SO_(2) and NO are oxidised to SO_(3) and NO_(2) , respectively,w hcih react with water to given H_(2)SO_(4) and HNO_(3) . The resultant solution is called acid rain. SO_(2) dissolves in water to form diprotic acid. SO_(2)(g) +H_(2)O(l) hArr HSO_(3)^(Theta) + H^(o+), K_(a_(1)) = 10^(-2) . HSO_(3)^(Theta) hArr SO_(3)^(2-) + H^(o+), K_(a_(2)) = 10^(-7) and for equilibrium, SO_(2)(aq) + H_(2)O (l) hArr SO_(3)^(2-)(aq) +2H^(o+)(aq) K_(a) = K_(a_(1)) xx K_(a_(2)) = 10^(-9) at 300K . Which of the following reagnets will given white precipitate with the aqueous solution of sulphurous acid?

In atmosphere, SO_(2) and NO are oxidised to SO_(3) and NO_(2) , respectively,w hcih react with water to given H_(2)SO_(4) and HNO_(3) . The resultant solution is called acid rain. SO_(2) dissolves in water to form diprotic acid. SO_(2)(g) +H_(2)O(l) hArr HSO_(3)^(Theta) + H^(o+), K_(a_(1)) = 10^(-2) . HSO_(3)^(Theta) hArr SO_(3)^(2-) + H^(o+), K_(a_(2)) = 10^(-7) and for equilibrium, SO_(2)(aq) + H_(2)O (l) hArr SO_(3)^(2-)(aq) +2H^(o+)(aq) K_(a) = K_(a_(1)) xx K_(a_(2)) = 10^(-9) at 300K . The pH of 0.01M aqueous solutioon of sodium sulphite (Na_(2)SO_(3))

Assertion (A): S reacts with SO_(3)^(2-) and forms S_(2)O_(3)^(2-) Reason (R) : S is electorn deficient and acts and acid and SO_(3)^(2-) is a base in terms of Lewis acid theroy.

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