Chemistry

The activation energy for the reaction, 2HI(g)→H2(g)+I2(g) is 209.5 kJ mol^−1 at 581 K. Calculate the fraction of molecules of reactants having energy equal to or greater than activation energy. 2HI(g)→H2(g)+I2(g) is 209.5 kJ mol^−1 at 581 K. Calculate the fraction of molecules of reactants having energy equal to or greater than activation energy. The [...]

The rate of the chemical reaction doubles for an increase of 10K in absolute temperature from 298K. Calculate Ea. The rate of the chemical reaction doubles for an increase of 10K in absolute temperature from 298K. Calculate Ea. June 4, 2021 Category: Chemistry , NCERT Exemplar Class 12 ,

What is the effect of temperature on the rate constant of reaction? What is the effect of temperature on the rate constant of reaction? June 4, 2021 Category: Chemistry , NCERT Exemplar Class 12 ,

Time required to decompose SO2Cl2 to half of its initial amount is 60 min. If the decomposition is a first order reaction, calculate the rate constant of the reaction. calculate the rate constant of the reaction. Time required to decompose SO2Cl2 to half of its initial amount is 60 min. If the decomposition is a [...]

A first order reaction has a rate constant 1.15×10^−3s^−1. How long will 5g of this reactant take to reduce to 3g ? A first order reaction has a rate constant 1.15×10^−3s^−1. How long will 5g of this reactant take to reduce to 3g ? June 4, 2021 Category: Chemistry , NCERT Exemplar Class 12 ,

The conversion of the molecule X to Y follows second order kinetics. If the concentration X is increased to three times, how will it affect the rate of formation of Y? how will it affect the rate of formation of Y? The conversion of the molecule X to Y follows second order kinetics. If the [...]

In a reaction, 2A→ Products, the concentration of A decreases from 0.5 mol L−1 to 0.4 mol L−1 in 10 minutes. Calculate the rate during this interval ? 2A→ Products In a reaction the concentration of A decreases from 0.5 mol L−1 to 0.4 mol L−1 in 10 minutes. Calculate the rate during this interval [...]

For a reaction A+B→P, the rate law is given by: r=k[A]^1/2[B]^2 What is the order of the reaction? For a reaction A+B→P the rate law is given by: r=k[A]^1/2[B]^2 What is the order of the reaction? June 4, 2021 Category: Chemistry , NCERT Exemplar Class 12 ,

For the reaction R→P, the concentration of a reactant changes from 0.03 M to 0.02 M in 25 min. Calculate the average rate of reaction using units of time both in minutes and seconds. For the reaction R→P the concentration of a reactant changes from 0.03 M to 0.02 M in 25 min. Calculate the [...]

The rate of a particular reaction quadruples when the temperature changes from 293 K to 313 K. Calculate the energy of activation for such a reaction. The rate of a particular reaction quadruples when the temperature changes from 293 K to 313 K. Calculate the energy of activation for such a reaction. June 4, 2021 [...]