Sindh MDCAT 2020 Chemistry#Chemical Kinetics#Rate Law56Choose the best answerFor the reaction A → products, when the concentration of A doubles, the rate of reaction increases four folds, which means it is: (Sindh MDCAT 2020)ANegative order reactionBFirst order reactionCZero order reactionDSecond order reaction Like 0 Discuss 0Share
MDCAT Chemistry Past Papers 2024Sindh MDCAT Chemistry Past Paper 2024#Chemical Kinetics#Rate Constant57Choose the best answerThe unit of rate constant for the first order reaction is:Aconc. s⁻¹BM² s⁻¹Cs⁻¹DM⁻¹ s⁻¹ Like 0 Discuss 0Share
Chemical KineticsRate Law from Reaction Mechanism58Choose the best answerConsider the mechanism: Step 1: 2NO ⇌ N₂O₂ (fast equilibrium) Step 2: N₂O₂ + H₂ → N₂O + H₂O (slow) Step 3: N₂O + H₂ → N₂ + H₂O (fast) The overall rate law is:ARate = k[NO]²[H₂]BRate = k[N₂O₂][H₂]CRate = k[NO]²DRate = k[N₂O₂][H₂]² Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Chemical Kinetics#Reaction Rate59Choose the best answerThe study of rates of chemical reactions and the factors that affect the rates of chemical reactions is known as: (Sindh MDCAT 2020)AThermodynamicsBStoichiometryCElectrochemistryDChemical kinetics Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Chemical Kinetics#Rate Constant60Choose the best answerWhich symbol represents the forward rate constant?AKcBkfCkrDRf Like 0 Discuss 0Share