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531

A catalyst increase the rate of a chemical reaction by providing a path that?

  • A. raise the activiation energy
  • B. increase the temperature
  • C. lowers the activation energy
  • D. increase the concentration
View Answer & Discuss (5) JAMB 2009
532

CuO(s) + H\(_2\)(g) ↔ Cu(s) + H\(_2\)O(g)
What is the effect of increasing the pressure on the equilibrium reaction above?

  • A. The equilibrium is shifted to the left
  • B. The equilibrium is shifted to the right
  • C. There is no effect
  • D. More H2(g) is produced
View Answer & Discuss (17) JAMB 2009
533
The equilibrium of an endothermic reaction which proceeds with an increase in volume can be shifted in the reverse direction by
  • A. increasing the temperature and decreasing the pressure
  • B. increasing the pressure and increasing the temperature
  • C. decreasing the temperature and increasing the pressure
  • D. decreasing the pressure and decreasing the temperature
View Answer & Discuss (7) JAMB 2009
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534

The oxidation of ammonia in excess air produces?

  • A. NO
  • B. N2O
  • C. NO2
  • D. N2O4
View Answer & Discuss (10) JAMB 2009
535

Hydrogen sulphide gas can act as?

  • A. an oxidizing agent
  • B. a dehydrating agent
  • C. a bleaching agent
  • D. a precipitating agent
View Answer & Discuss (9) JAMB 2009
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