MCQ
The number of possible isomers for compound ${C_2}{H_3}C{l_2}Br$ is
- A$2$
- ✓$3$
- C$4$
- D$5$

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$2A{B_3}(g) \rightleftharpoons {A_2}(g) + 3{B_2}(g)$. At equilibrium, $2\, mol$ of $A_2$ are found to be present. The equilibrium constant of this reaction is