21. The rate constant of a chemical reaction increases by increasing the
22. Knudsen diffusion is directly proportional to
23. Pure A in gas phase enters a reactor 50% of this A is converted to B through the reaction, A → 3B. Mole fraction of A in the exit stream is
24. For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.
25. When a catalyst increases the rate of forward reaction, the value of rate constant
26. In the hydrodealkylation of toluene to benzene, the following reactions occur:
C7H8 + H2 → C6H6 + CH4
2C6H6 ⇋ C12H10 + H2
Toluene and hydrogen are fed to a reactor in a molar ratio 1 : 5.80% of the toluene gets converted and the selectivity of benzene (defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is
C7H8 + H2 → C6H6 + CH4
2C6H6 ⇋ C12H10 + H2
Toluene and hydrogen are fed to a reactor in a molar ratio 1 : 5.80% of the toluene gets converted and the selectivity of benzene (defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is
27. Half-life period for a first order reaction is __________ the initial concentration of the reactant.
28. What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only?
29. Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure?
30. Transition state theory gives the rate constant as
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