Advertisements
Advertisements
प्रश्न
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
विकल्प
rate is proportional to the surface coverage
rate is inversely proportional to the surface coverage
rate is independent of the surface coverage
rate of decomposition is slow
उत्तर
rate is independent of the surface coverage
APPEARS IN
संबंधित प्रश्न
What are pseudo-first-order reactions?
Answer the following in brief.
What is a zeroth-order reaction?
The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10-6 s-1, the rate constant at 300 K is ______.
In a first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half-life period of the reaction is ____________.
For a zero order reaction, the plot of [A]t vs t is linear. The slope of the line is equal to ____________.
For the first order reaction A → B, the rate constant is 0.25 s-1, if the concentration of A is reduced to half, the value of rate constant will be ________.
What is the unit of rate constant for the zero order reaction?
For zero order reaction, when [A]t is plotted against time (t), the slope of the straight line obtained is equal to ______.
A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of this radioisotope.
The half-life period for the first order reaction is 1.7 hrs. How long will it take for 20% of the reactant to disappear?
