In a chemical reaction


In a chemical reaction, $\mathrm{A}+2 \mathrm{~B} \stackrel{\mathrm{K}}{\rightleftharpoons} 2 \mathrm{C}+\mathrm{D}$, the initial concentration of $\mathrm{B}$ was $1.5$ times of the concentration of A, but the equilibrium concentrations of $\mathrm{A}$ and $\mathrm{B}$ were found to be equal. The equilibrium constant $(K)$ for the aforesaid chemical reaction is:

  1. 16

  2. 4

  3. 1

  4. $\frac{1}{4}$

Correct Option: , 2


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