Question

Assertion :If ${\beta }_4$ for $Cu(N{H}_3{)}_4{]}^{2+}$ is $2.1\times {10}^{13}$. Its instability constant is $4.76\times {10}^{-14}$ Reason: Overall dissociation equilibrium constant varies inversely with formation constant

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

The overall complex disssociation constant or instability constant is the reciprocal of the overall stability constant ${\beta }_4$

$\frac{1}{{\beta }_4}=\frac{1}{2.1\times {10}^{13}}=4.7\times {10}^{-14}$