Chemical KineticsRate of Appearance of Products31Choose the best answerFor the reaction 2A ⇌ 4B + C, the concentration of B increases by 5 × 10⁻³ mol L⁻¹ in 10 s. The rate of appearance of B is:A5 × 10⁻⁴ mol L⁻¹ s⁻¹B5 × 10⁻³ mol L⁻¹ s⁻¹C6 × 10⁻⁵ mol L⁻¹ s⁻¹D4 × 10⁻⁴ mol L⁻¹ s⁻¹ Like 0 Discuss 0Share
Chemical KineticsReaction Order and Molecularity32Choose the best answerWhich statement about reaction order and molecularity is false?AReaction order may be zero, positive, negative or fractional.BMolecularity is a theoretical concept applied to an elementary step.CReaction order can never equal a stoichiometric coefficient.DMolecularity is a whole number. Like 0 Discuss 0Share
Chemical KineticsFractional-Order Reactions33Choose the best answerIn the commonly cited kinetic example of conversion of chloroform to carbon tetrachloride, the reaction order is:A1B1.5C2D3 Like 0 Discuss 0Share
Chemical KineticsDetermination of Reaction Order34Choose the best answerIf doubling [A] increases the rate fourfold and tripling [A] increases the rate ninefold, the rate is proportional to:A[A]B[A]²C√[A]D[A]³ Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Chemical Kinetics#Rate Law35Choose the best answerFor Rate = k[A]²[B], what happens to the rate if [A] is doubled and [B] is halved?AHalf of the original rateBEqual to the original rateCTwice the original rateDFour times the original rate Like 0 Discuss 0Share