The challenging MCQ by Online Entry test Academy(OETA)2018
(Note:Correct ans with explanation is given on "Online entry test academy" Group so join "online entry test academy" group and get correct answer with explanation)
*Q.55 2SO2 + O2 <=====> 2SO3 Delta H = -ve
On increasing temperature of the above reaction then *
A) The concentration of SO2 decreases
B) The concentration of SO3 increases
C) The value of Kc increases
D) The rate of reaction increases
Correct Ans : D [The rate of reaction increases]
Explanation : The above reaction is reversiable exothermic reaction.According to kinetic theory and Arrhenius theory by increasing temperature the rate of reaction (exo or endo) always increases however in case of exothermic reaction the rate of backward direction increases as many times as compared to farward (forward also increases but with less speed). High temperature favours the overall backward direction so reactants increases and products decreases.
We know
Kc = [P]/ [R]
So Kc decreases on increasing temperature.
(Note:Correct ans with explanation is given on "Online entry test academy" Group so join "online entry test academy" group and get correct answer with explanation)
*Q.55 2SO2 + O2 <=====> 2SO3 Delta H = -ve
On increasing temperature of the above reaction then *
A) The concentration of SO2 decreases
B) The concentration of SO3 increases
C) The value of Kc increases
D) The rate of reaction increases
Correct Ans : D [The rate of reaction increases]
Explanation : The above reaction is reversiable exothermic reaction.According to kinetic theory and Arrhenius theory by increasing temperature the rate of reaction (exo or endo) always increases however in case of exothermic reaction the rate of backward direction increases as many times as compared to farward (forward also increases but with less speed). High temperature favours the overall backward direction so reactants increases and products decreases.
We know
Kc = [P]/ [R]
So Kc decreases on increasing temperature.
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