MCQ
The major product for in the reaction


- A

- B

- ✓

- D







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$2 C ( s )+ H _2( g ) \longrightarrow C _2 H _2( g ) \ \ \ \ \ \Delta H =225 \ kJ mol ^{-1} $
$2 C ( s ) \longrightarrow 2 C ( g )\ \ \ \ \ \ \Delta H =1410 \ kJ mol ^{-1} $
$H _2( g ) \longrightarrow 2 H ( g ) \ \ \ \ \ \ \Delta H =330 \ kJ mol ^{-1}$
(Given $R =0.082\,L\,atm\,K ^{-1}\,mol ^{-1}$ )
$\frac{d[NH_3]}{dt} = 2 \times 10^{-4} \, mol \,L^{-1} \, s^{-1}$ , the value of $\frac{-d[H_2]}{dt}$ would be .................. $mol \,L^{-1} \, s^{-1}$