Assertion -For N 2 g-3 H 2 g- 2 NH 3 g- the equilibrium constant is - K- then for 1 2 N 2 g- 3 2 H 2 g- NH 3 g the equilibrium constant will be - K - Reason- If concentrations are changed to half the equilibrium constant will be halved-

The correct option is C Assertion is correct but Reason is incorrect 𝐄𝐱𝐩𝐥𝐚𝐧𝐚𝐭𝐢𝐨𝐧: If an equation is multiplied by n, the K becomes K^n , and if ...

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Byju's Answer

Standard XII

Chemistry

Characteristics of Equilibrium Constant

Assertion :Fo...

Question

Assertion :For $N_{2} (g) + 3 H_{2} (g) ⇌ 2 {N H}_{3} (g)$ , the equilibrium constant is ' $K$ ' then for $\frac{1}{2} N_{2} (g) + \frac{3}{2} H_{2} (g) ⇌ {N H}_{3} (g)$ the equilibrium constant will be $\sqrt{K} .$ Reason: If concentrations are changed to half the equilibrium constant will be halved.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
$E x p l a n a t i o n :$
If an equation is multiplied by n, the $K$ becomes $K^{n}$ , and if it is divided by $m$ , the K becomes $\sqrt[m]{K}$ .

Thus the assertion is correct but the reason is incorrect.

Hence the correct answer is option $C .$

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Assertion :For N2(g)+3H2(g)⇌2NH3(g), the equilibrium constant is 'K' then for 12N2(g)+32H2(g)⇌NH3(g) the equilibrium constant will be √K. Reason: If concentrations are changed to half the equilibrium constant will be halved.

The correct option is C Assertion is correct but Reason is incorrectExplanation:If an equation is multiplied by n, the K becomes Kn, and if it is divided by m, the K becomes m√K.Thus the assertion is correct but the reason is incorrect.Hence the correct answer is option C.