The bromination of acetone that occurs in acid solution is respresented by this equation.
The activation energy for a simple chemical reaction is Ea in forward direction. The activation energy for reverse reaction.
Can be less than or more than Ea.
Is always double of Ea.
Is negative of Ea.
Is always less than Ea.
In the following reaction, how is the rate of appearance of the underlined product related to the rate of disappearance of the underlined reactant?
In a reversible reaction,the energy of activation of the forward reaction is 50 kcal. The energy of activation for the reverse reaction will be.
< 50 kcal
50 kcal
Either greater than or less than 50 kcal.
> 50 kcal
The reaction follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B 1 h. What is the time taken for the conversion of 0.9 mole of A to 0.675 mole of B ?
0.25 h
1 h
0.5 h
In a first order reaction if k is rate constant and initial concentration of the reactant A is 0.5 M, then the half-life is.
For exothermic reaction, the energy of activation is.
Equal to the energy of activation of products.
Less than the energy of activation of product.
Greater than the energy of activation of products.
sometimes greater and sometimes less than that of the products.
half-life period of a first order reaction is 1386 s. The specific rate constant of the reaction is.
5.0 x 10-3s-1
0.5 x 10-2s-1
0.5 x 10-3s-1
When a biochemical reaction is carried out in laboratory from outside of human body in the absence of enzyme, the rate of reaction obtained is 10-6 times,then activation energy of the reaction in the presence of enzyme is.
P is required.
Different from Ea obtained in laboratory
Cannot say any things
