Question

r answers to questons 70 through 3 on the information below and your knowledge of chemistry information belo Methanol can be manufact monoxide gas and hydrogen gas react system at equilibrium red by a reaction that is reversible. In the reaction, carbon cat using a catalyst. The equation below represents this COg)+2H(gCH,OH(g)+ energy belongs. (jis of organic compounds to which the producet of the forward reaction belongs. [) 70 State the class e rate of the forward reaction to the rate of the reverse reaction in this 72 Exyplaln, in terms of olson ey wythe concentraton of h,l9 n ths 3 State the effect on the rates of both the forward and reverse reactions if no catalyst is equilibrium system. [t) system will increase the concentration of CH OH g. used in the system. [I] 7

Answer 1

70. The class of organic compounds to which CH3OH belongs is alcohols since it contains a hydroxy group attached to the aliphatic hydrocarbon.

71. At equilibrium, the rate of the forward reaction is equal to the rate of backward reaction so that the concentration of each reactant and product remains constant.

72.On increasing the concentconcen of H2, there will be more possibilities of effective collisions taking place between carbon monoxide CO and hydrogen molecule H2 in order to give the product. Collisions are effective when molecules are in correct Orientation and the activation Energy barrier is overcome. More molecules of H2 will mean greater chances of collisions and hence more number of effective collisions which give the product. Hence the equilibrium will shift to forward direction and the concentration of Ch3OH will increase.

73.When no catalyst is used, the rate of forward reaction will be slow. Equilibrium will be achieved at a slower pace taking more time. At equilibrium, the rate of forward reaction will be equal to the rate of backward reaction and both will of these will be slower than the reaction in which catalyst is used.