For reaction 2Y -> Y2 , where Y represents reactant, the rate constant was found to be second order with respect to Y. Which of the following is true ? a. The rate constant is dependent on the reciprocal of [Y]. b. The rate of reaction was determined from the equilibrium constant. c. The rate constant of the reaction is equal to equilibrium constant. d. The reaction is an example of a Pseudo first order reaction.
For reaction 2Y -> Y2 , where Y represents reactant, the rate constant was found to be second order with respect to Y. Which of the following is true ?
a. The rate constant is dependent on the reciprocal of [Y].
b. The
c. The rate constant of the reaction is equal to equilibrium constant.
d. The reaction is an example of a Pseudo first order reaction.
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For acid base equilibria expression, water is not included in expression because
a. pure liquids are not included in equilibria expression.
b. H20 concentration will be assumed constant in equilibria as it will be present in much higher concentration than other molecules in the equilibria.
c. H20 concentration will cancel out as it appears in both reactant and product side.
d. Kw is so small, hence H20 concentration will be negligible.
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Given below reaction is 1st order reaction with respect to the weak acid and
half life of reaction is 8.9 x10-7 sec at 25 C:
CH3COOH (aq) -> H+ (aq) + CH3COO- (aq). Which of the following is true ?
a. The Equilibrium constant can be obtained from the half-life of the reaction.
b. The activation energy for the reaction can be determined from half life of the reaction.
c. All CH3COOH (aq) is converted to H+ (aq) + CH3COO- (aq) after 1 sec at 25C.
d. At equal starting concentrations, the amount of CH3COOH (aq) at 15 C will be less than the amount of CH3COOH (aq) at 25 C.
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What happens when NH3 solution is added to equilibria below ?
Ca(OH)2 (s) -> Ca+2 (aq) + 2OH-(aq)
a. Ca(OH)2 (s) becomes more soluble because of diverse ion effect.
b. Ca+2 is reduced to Ca metal.
c. Ca(OH)2 (s) becomes less soluble because of common ion effect.
d. no reaction
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For a certain
a. > 0
b. < 0
c. = 0
d. = Eo cell
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