Answer to Question #60123 in Physical Chemistry for joseph orobiyi

Question

8 Rusting of iron Is an example of________ reaction
Slow
Fast
Moderate
explosive



9 In the reaction: $2B \rightarrow Product$; the rate equation is: Rate
= k[B]. If the concentration of ‘B’ is doubled, the rate of reaction
will increase by a multiple of
Four
Two
Three
None of these



10 Powdered marble reacts more rapidly with HCl than the chips of marble
because:
Surface area of powdered marble is more that of chips of marble and
hence there is more collisions between the molecules of reactants
Number of molecules increases.
Energy of activation decreases
Marble chips will not react with HCl



11 The term — dx/dt in the rate expression refers to the
instantaneous rate of the reaction
Average rate of the reaction
increase in concentration of the reactants
Change in concentration of the reactants with time