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Rate law is an expression relating the rate of a reaction to theA. temperature of the reactionB. rate constant of the reactantsC. the concentration of the reactantsD. both (2) and (3) |
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Answer» Correct Answer - D The rates of chemical reactions differ greately. Lonic reactions in an aqueous solution are over in a fraction of a second whereas involving molecules take much longer. If we add brium ion to an aqueous solution of sulfate ion, a preciptate of barium sulfate forms almost immediately. On the other hand, reactions such as rusting i=of iron, are impreceptibly slow. Reactions taht occur in a cement mixture as it hardens to concrete reuire years for completion. A molecules reaction usually involves breaking of covalent bonds in the reactions. Different amounts of energies are required for different reactants and hence rates are different. |
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