239. If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatlier principle)
241. Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in
244. The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions.
245. A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
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