Q.

Assertion : At 298K, pH of aqueous solution of sodium carbonate is greater than seven
Reason : Carbonate ion of sodium carbonate undergoes hydrolysis

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a

(A) is true but (R) is false

b

Both (A) and (R) are true but (R) is not the correct explanation of (A)

c

Both (A) and (R) are true and (R) is the correct explanation of (A)

d

Both (A) and (R) are false

answer is B.

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Detailed Solution

CO32+2H2OH2O+CO2+2OH

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Assertion : At 298K, pH of aqueous solution of sodium carbonate is greater than sevenReason : Carbonate ion of sodium carbonate undergoes hydrolysis