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From the rate expressions for the following reactions, determine their order of reaction and the dimensions of the rate constants : (i) 3" NO "(g)toN_(2)O(g)+NO_(2)(g)," Rate "=k[NO]^(2) (ii) H_(2)O_(2)(aq)+3" I"^(-)(aq)+2" H"^(+)to2H_(2)O(l)+I_(3)^(-)," Rate "=k[H_(2)O_(2)][I^(-)] (iii) CH_(3)CHO(g)toCH_(4)(g)+" CO "(g)," Rate "=k[CH_(3)CHO]^(3//2) (iv) C_(2)H_(5)Cl(g)toC_(2)H_(4)(g)+HCl(g) ," Rate "=k[C_(2)H_(5)Cl]. |
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Answer» Solution :(i) ORDER = 2, Dimensions of `k=("Rate")/([NO]^(2))=(molL^(-1)s^(-1))/((molL^(-1))^(2))=Lmol^(-1)s^(-1)` (ii) Order = 2, Dimensions of k = Same as in (i) (III) Order `=(3)/(2)`, Dimensions of `k=("Rate")/([CH_(3)CHO]^(3//2))=(molL^(-1)s^(-1))/((molL^(-1))^(3//2))=L^(1//2)mol^(-1//2)s^(-1)` (iv) Order = 1, Dimensions of `k=("Rate")/([C_(2)H_(5)Cl])=(molL^(-1)s^(-1))/(molL^(-1))=s^(-1).` |
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