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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1576:
which of the following reagents could be used to distinguish between propan-1-ol and propan-2-ol
  • A H+ / K2Cr2O7
  • B I\(_2\) / OH-
  • C CH\(_3\)COOH
  • D NaCl
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Question 1577:
If a catalyst is added to a system, the temperature and the pressure remain constant, there would be no effect on the?
  • A Activation energy of the reaction
  • B Rate of the reaction
  • C Rate of the reverse reaction
  • D Heat of reaction
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Question 1578:
consider the following reaction equation: 2NH\(_3 \) .+ 3Cl\(_2\) → N2 + 6HCl.
NH\(_3\) is acting as?
  • A A reducing agent
  • B A dehydrating agent
  • C A drying agent
  • D An oxidizing agent
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Question 1579:
The oxidation of chromium in Cr\(_2\)O\(_7)\(-2\) ?
  • A +4
  • B +5
  • C +6
  • D +7
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Question 1580:
The process by which alkanoic acid reacts reversibly with alkanols is known as?
  • A Saponification
  • B Esterification
  • C Carboxylation
  • D Halogenation
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