When the initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction will be:
1. 0
2. 1
3. 1.5
4. 2
1. | 269 kJ mol–1 | 2. | 34.7 kJ mol–1 |
3. | 15.1 kJ mol–1 | 4. | 342 kJ mol–1 |
A reaction having equal energies of activation for forward and reverse reaction has:
1. ΔG = 0
2. ΔH = 0
3. ΔH = ΔG = ΔS = 0
4. ΔS = 0
In a reaction, A + B → Product, the rate is doubled when the concentration of B is doubled, and the rate increases by a factor of 8, when the concentrations of both the reactants (A and B) are doubled. The rate law for the reaction can be written as:
1. Rate = k[A][B]2
2. Rate = k[A]2[B]2
3. Rate = k[A][B]
4. Rate = k[A]2[B]
In a zero-order reaction for every 10 °C rise of temperature, the rate is doubled.
If the temperature is increased from 10 °C to 100 °C, the rate of the reaction will become:
1. 256 times
2. 512 times
3. 64 times
4. 128 times
Which of the following statements about the order of reaction is incorrect?
1. | Order is not influenced by the stoichiometric coefficient of the reactants. |
2. | Order of reaction is the sum of power to the concentration terms of reactants to express the rate of reaction. |
3. | The order of reaction is always a whole number. |
4. | Order can be determined by experiments only. |
For the reaction,
the value of rate of disappearance of N2O5 is given as 6.25 x 10-3mol L-1s-1.The rate of formation of NO2 and O2 is given respectively as:
1. | 6.25 × 10-3 mol L-1s-1 and 6.25 × 10-3 mol L-1s-1. |
2. | 1.25 × 10-2 mol L-1s-1 and 3.125 × 10-3 mol L-1s-1. |
3. | 6.25 × 10-3 mol L-1s-1 and 3.125 × 10-3 mol L-1s-1. |
4. | 1.25 × 10-2 mol L-1s-1 and 6.25 × 10-3 mol L-1s-1. |
For an endothermic reaction, the energy of activation is Ea, and the enthalpy of reaction is ΔH (both of these in kJ/mol). The minimum value of Ea will be:
1. Less than H
2. Equal to H
3. More than H
4. Equal to zero
During the kinetic study of the reaction, 2A + B\( \rightarrow\)C + D, following results were obtained:
Run | [A)/ mol L-1 | [B)/ mol L-1 | Initial rate of formation of D/mol L-1 |
I | 0.1 | 0.1 | \(6.0 \times 10^{- 3}\) |
II | 0.3 | 0.2 | \(7.2 \times 10^{- 2}\) |
III | 0.3 | 0.4 | \(2.88 \times \left(10\right)^{- 1}\) |
IV | 0.4 | 0.1 | \(2.40 \times \left(10\right)^{- 2}\) |
Based on the above data which one of the following is correct?
1. rate= k[A]2[B]
2. rate= k[A][B]
3. rate= k[A]2[B]2
4. rate= k[A][B]2