The stepwise formation of [ {Cu}( {NH}_{3})_{4}]^{2+} is given below {Cu}^{2+}+ {NH}_{3} ⇌[ {Cu}( {NH}_{3})]^{2+} {[ {Cu}( {NH}_{3})]^{2+}+ {NH}_{3} \stackrel{ {K}{⇌}_{2}}[ {Cu}( {NH}_{3})_{2}]^{2+}} {[ {Cu}( {NH}_{3})_{2}]^{2+}+ {NH}_{3} \stackrel{ {K}{⇌}_{3}}[ {Cu}( {NH}_{3})]^{2+}} [ {Cu}( {NH}_{3})_{3}]^{2+}+ {NH}_{3} \stackrel{K_{4}{⇌}}[ {Cu}( {NH}_{3})_{4}]^{2+} The value of stability constants K_{1}, K_{2}, K_{3} and K_{4} are 10^{4}, 1.58 \times 10^{3}, 5 \times 10^{2} and 10^{2} respectively. The overall equilibrium constants for dissociation of [ {Cu}( {NH}_{3})]^{2+}] is x \times 10^{-12}. The value of x is ............. . (Rounded off to the nearest integer) [24 Feb 2021 Shift 1]

JEE Main 24 Feb 2021 Shift 1 Solved Paper

Section: Chemistry

Question : 60 of 90

Marks: +1, -0

The stepwise formation of [Cu(NH3)4]2+ is given below
Cu2++NH3⇌[Cu(NH3)]2+
‌[Cu(NH3)]2++NH3

⇌

[Cu(NH3)2]2+
‌[Cu(NH3)2]2++NH3

⇌

[Cu(NH3)]2+
[Cu(NH3)3]2++NH3

⇌

[Cu(NH3)4]2+
The value of stability constants K1,K2,K3 and K4 are 104,1.58×103,5×102 and 102 respectively.
The overall equilibrium constants for dissociation of [Cu(NH3)]2+] is x×10−12. The value of x is ............. . (Rounded off to the nearest integer)

[24 Feb 2021 Shift 1]

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