Chemical Reaction Quiz 4

Higher free energy of activation of a chemical reaction (at a given temperature) implies ______?

In a zero order reaction, reactants concentration does not change with time and the__________?

In a reversible reaction, a catalyst increases the rate of forward reaction___________?

In an ideal P.F.R. at steady state conditions _____?

For the reversible reaction A ? 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

In a consecutive reaction system of the given figure bellow, when E1 is much greater than E2, the yield of B increases with the______?

Given, 3H2 + CO = CH4 + H2O, KP = 101.84 and, 4H2 + CO2 = CH4 + 2H2O, KP = 101.17 the KP for the reaction CO + H2O = CO2 + H2 is ___________?

In a chemical reaction, _______ are conserved?

Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum?

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will_________?

If ?n? is the order of reaction, then unit of rate constant is __________?

If CA is the quantity of reactants initially present, the quantity left after ?n? half periods will be equal to___________?

If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to_____?

In case of a ______ reactor, the composition in the reactor and at the exit of the reactor is the same ?

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst_____?

From among the following, choose one which is not an exothermic process ?

Half-life period for a first order reaction is ______ the initial concentration of the reactant?

For the reaction, A + B ? 2B + C,_____?

For the same residence time, which one will give the maximum conversion ?

If Thiele modulus is _________, then the pore diffusion resistance in a catalyst may be considered as negligible?

In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in ________ in the concentration of CO2?

From collision theory, the reaction rate constant is proportional to__________?

In a semi-batch reactor _______?

In a chemical reaction as shown in the bellow figure, it is observed that the (i) Rate of formation of ?P? is doubled on doubling the concentration of ?X? (ii) Rate of formation of ?P? is quadrupled on doubling the concentration of ?Y? (iii) Doubling the concentration of ?Z? does not affect the rate of formation of ?P? What is the order of the above chemical reaction ?

In case of physical adsorption, the heat of adsorption is of the order of ______ kcal/kg mole?

In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)_______?

If ?G (free energy change) for a chemical reaction is very large and negative, then the reaction is_________?

Half life period of a chemical reaction is__________?

In case of ______ reactions, the reaction rate does not decrease appreciably as the reaction proceeds?

Helium-mercury method can be used to determine the ______ of the catalyst particle?

Holding time for flow reactors is ________ the space time, for constant fluid density ?

In an ideal mixed reactor (at steady state), the _____?

In a continuous flow stirred tank reactor, the composition of the exit stream__________?

In case of a P.F.R., there_____?

In a/an _______ reactor, there is exchange of heat with the surroundings with sizeable temperature variation?

Fractional conversion ______ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ? 2NH3?

In an exothermic chemical reaction, the reactants compared to the products have___________?

Helium-mercury method is used for the measurement of the _________ of the catalyst?

In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be _______ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume ?

Half life period of a first order irreversible reaction A ? B is ________?

Half life period of decomposition of a liquid ?A? by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ?A? is ______ minutes?

In a/an ______ vessel, the fluid enters and leaves following plug flow?

In autocatalytic reactions ?

In an ideal tubular-flow reactor__________?

In a semi-batch reactor ___________?

If the rate of a chemical reaction becomes slower at a given temperature, then the___________?

If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the _________ diffusion?

From Arrhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is_____?

If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is ________?

In case of a/an _______ chemical reaction, conversion increases with the rise in temperature?