When spherical particles of 0.1 mm diameter are ground to spherical particles of 0.025 mm diameter (for the same volume), the surface area increase to
For a first order reaction k=5.48 x10-4s-1. The two-third life for this reaction wound be
A reaction is of first order with respect to reactant A, has a rate constant 6 min-1. If one starts with [A]= 0.5 mol L-1, the concentraction of [A] would reach to 0.05 mol L-1 in
If the rate constant of a reaction is 2.0 mol-1 L-1 at 700 K and 32 mol-1 L s-1 at 800 K the activation energy for the reaction is
The rate of a particular reaction quadruples, when the temperature chages from 293 K to 313 K. The activation energy for such reaction would be
Which of the following best explains how catalysts increase the rate of a chemical reaction?
Choose the correct statement from the following :
When concentractions are expressed in mole units and time in seconds, the units of the zero order rate constant (k) are
Which one of the following statements is wrong in case of enzyme catalysis?
A reaction that is of first order with respect to reactant A has a rate constant 6 mim-1. If we start with [A] = 0.5 mol L-1, when would [A] reach the value 0.05 mol L-1?
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