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प्रश्न
Fill in the blanks by choosing the appropriate word(s) from those given in the brackets:
(two, four, sec-1, diamagnetic, acetaldehyde, mol-1L sec-1, paramagnetic, formaldehyde, acetone, ethanol)
When the concentration of a reactant of first-order reaction is doubled, the rate of reaction becomes ______ times. The unit of rate constant (k) for the first-order reaction is ______.
उत्तर
When the concentration of a reactant of first-order reaction is doubled, the rate of reaction becomes two times. The unit of rate constant (k) for the first-order reaction is sec-1.
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संबंधित प्रश्न
In a first-order reaction, 10% of the reactant is consumed in 25 minutes. Calculate:
(1) The half-life period of the reaction.
(2) The time required for completing 87.5% of the reaction.
Two moles of NH3 are introduced into the one-litre flask in which it dissociates at high temperature as follows: 2NH3(g) ⇌ N2(g) + 3H2(g). Determine Kc, if at equilibrium 1 mole of NH3 remains.
(i)
Write the mathematical expression relating to the variation of the rate constant of a reaction with temperature.
(ii)
How can you graphically find the activation energy of the reaction from the above expression?
(iii)
The slope of the line in the graph of log k (k = rate constant) versus `1/"T"` is -5841. Calculate the activation energy of the reaction.
40% of a first-order reaction is completed in 50 minutes. How much time will it take for the completion of 80% of this reaction?
