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Which of the following statement(s) is/are correct?
(i) Rate of reaction decreases with passage of time as the concentration of reactants decrease.
(ii) For a reaction
\[
\mathrm{pP}+\mathrm{qQ} \longrightarrow \mathrm{rR}+\mathrm{sS}
\]
Rate \( =k[P]^{\mathrm{x}}[\mathrm{Q}]^{\mathrm{y}} \) where \( \mathrm{x}=\mathrm{p} \) and \( \mathrm{y}=\mathrm{q} \)
(iii) Rate law is the expression in which reaction rate is given in terms of molar concentration of reactants with each term raised to some power, which may or may not be same as the stichiometric coefficient of the reacting species in a balanced chemical equation.
(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (i) only
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