Chemical Kinetics questions
1373 published questions with worked solutions.
- For the reaction N _2 + 3 H _2 2 NH _3, if d[ NH _3] dt = 2 10^ -4 mol L ^ -1 s ^ -1 , the value of -d[ H _2] dt would be :
- In the reaction BrO _3^- (aq) + 5 Br ^- (aq) + 6 H ^+ 3 Br _2 (l) + 3 H _2 O(l) . The rate of appearance of bromine ( Br _2) is...
- Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is:
- For the reaction A + B products, it is observed that: (a) on doubling the initial concentration of A only, the rate of reaction...
- The rate of reaction 2 NO + Cl _2 2 NOCl is given by the rate equation rate = k[ NO ]^2[ Cl _2]. The value the rate of constant...
- For the reaction N _2 O _5(g) 2 NO _2(g) + 1 2 O _2(g) the value of rate of disappearance of N _2 O _5 is given as 6.25 10^ -3...
- For an endothermic reaction, energy of activation is E_a and enthalpy of reaction is H (both of these in kJ/mol). Minimum value...
- During the kinetic study of the reaction, 2 A + B C + D , following results were obtained: Run I: [ A ] = 0.1 mol L ^ -1 , [ B ]...
- The half life of a substance in a certain enzyme-catalysed reaction is 138 s. The time required for the concentration of the...
- The rate of the reaction 2 N _2 O _5 4 NO _2 + O _2 can be written in three ways : - d[ N _2 O _5] dt = k ,[ N _2 O _5] d[ NO _2]...
- The unit of rate constant for a zero order reaction is :
- Which one of the following statements for the order of a reaction is incorrect ?
- The catalytic activity of transition metals and their compounds is ascribed mainly to
- Activation energy (E_a) and rate constants (k_1 and k_2) of a chemical reaction at two different temperatures (T_1 and T_2) are...
- In a reaction, A + B Product , rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when...
- In a zero-order reaction for every 10^ rise of temperature, the rate is doubled. If the temperature is increased from 10^ C to...
- What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20^ to 35^ ? (R = 8.314 J...
- When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the...
- The rate of a first-order reaction is 0.04 mol l ^ -1 s ^ -1 at 10 second and 0.03 mol l ^ -1 s ^ -1 at 20 seconds after...
- Consider the nitration of benzene using mixed conc. H _2 SO _4 and HNO _3. If a large amount of KHSO _4 is added to the mixture,...
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Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration