SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is a synthesis reaction?
A
2H2O
B
2NO + O2
C
2K + 2H2O
D
CH4 + 2O2
Explanation: 

Detailed explanation-1: -The rate of the reaction, 2NO+O2⟶2NO2, at 25oC is 0. 028 mol L−1s−1. The experimental rate is given by, r=k[NO]2[O2].

Detailed explanation-2: -The reaction, 2NO2→2NO+O2 has an activation energy of 110 kJ mol−1. At 400∘C, the rate constant is 7.8 mol−1Ls−1.

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