95.     The equilibrium point of the reaction

is shifted to the left by:

1.        increasing the concentration of the enzyme catalysing the reaction
2.        decreasing the concentration of the enzyme catalysing the reaction
3.        increasing the concentration of CH₃.CO.COOH
4.        decreasing the concentration of H⁺
5.        decreasing the concentration of NAD⁺

96.        The equilibrium point of the reaction

is shifted to the right by:

1.        increasing the concentration of the enzyme catalysing the reaction
2.        decreasing the concentration of the enzyme catalysing the reaction
3.        increasing the concentration of H⁺
4.        decreasing the concentration of CH₃.CHO
5.        decreasing the concentration of NAD⁺
 

97.        For the equilibrium reaction A « B + C, which one of the following is FALSE?

1.        The rate of the forward reaction is k_f.[A]
2.        The rate of the backward reaction is k_b.[B].[C]
3.        At equilibrium k_f.[A] = k_b.[B].[C] = 0
4.        The rate constant k_f can be measured in min^-1
5.        The rate constant k_b can be measured in M^-1 .min^-1

98.     With regard to the reaction

	k-1
A	«	B + C - heat
	k+1

which one of the following is FALSE?

1.        The rate of the reaction from left to right is k₊₁×[A]
2.        The rate of the reaction from right to left is k_-1×[B] × [C]
3.        At equilibrium k₊₁ = k_-1
4.        The equilibrium constant K_eq= [B]× [C]¸ [A] at equilibrium
5.        As temperature increases the equilibrium point moves to the right

99.       For the equilibrium

	k-1
A + B	«	C + D + HEAT
	k+1

which one of the following statements is FALSE?

1.        The rate of the forward reaction is represented by k₊₁.
2.        The equilbrium constant (K_eq) = [C].[D]   at equilibrium.
                                                             [A].[B]
3.        An increase in temperature moves the equilibrium to the left.
4.        Addition of extra compound A results in an increase in products C and D.
5.        Removal of product D results in an increase in C.

100.     With regard to the reaction:

	k-1
A + B+	«	P + Q + H+
	k+1

which one of the following is FALSE?:

1.        The rate of the forward reaction is k₊₁×[A]× [B⁺]
2.        The rate of the back reaction is k_-1×[P]× [Q]× [H⁺]
3.        As pH increases the concentrations of P and Q at equilibrium increase
4.        The equilibrium constant K_eq = k₊₁-k-₁
5.        The units of K_eq are for example nmol/l

101.     With regard to the reaction:

	k-1
A + B + H+	«	P + Q
	k+1

which one of the following is FALSE?:

1.        The rate of the forward reaction is k₊₁×[A]× [B]× [H⁺]
2.        The rate of the back reaction is k_-1×[P]× [Q]
3.        At equilibrium the rates of the forward and back reactions are equal
4.        The equilibrium constant Keq = ^{[P]× [Q]}/[A]× [B]× [H⁺] at equilibrium
5.        As pH increases the concentrations of P and Q at equilibrium increase
 
 

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