MCQ
Bromination of $(E)-2$ -butenedioic acid gives
- ✓$(2R, 3S)-2, 3$ -dibromosuccinic acid
- B$(2R, 3R)-2, 3$ -dibromosuccinic acid
- Ca mixture of $(2R, 3R)$ and $(2S, 3S)-2, 3$ -dibromosuccinic acid
- D$(2S, 3S)-2, 3$ -dibromosuccinic acid
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$C{S_2}(g) + 4{H_2}(g) \to C{H_4}(g) + 2{H_2}S(g)$
$CH_4(g) +2O_2(g) \rightarrow CO_2(g)+2H_2O(l)\,;$ $\Delta H= -890 \,kJ$
$CO_2(g) \rightarrow C($graphite$) + O_2(g) \,;$ $\Delta H= 393 \,kJ$
$2H_2O(l) \rightarrow 2H_2(g) + O_2(g) \,;$ $\Delta H= 571 \,kJ$
$2H_2(g) \rightarrow 4H(g)\, ;$ $\Delta H= 871\, kJ$
$C($graphite$) \rightarrow C(g)\, ;$ $\Delta H= 716\, kJ$