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Chemistry WAEC Past Questions

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1576

consider the following reaction equation: 2Al(OH)\(_3\) + 3H\(_2\)SO\(_4\) Al\(_2\)(SO4)\(_3\)(aq)+6H\(_2\)O. How many moles of tetraoxosulphate(vi)acid is needed to produce 0.5mol of aluminium tetraoxosulphate(vi)?

  • A. 0.5
  • B. 1.0
  • C. 1.5
  • D. 3.0
View Answer & Discuss (3) WAEC 2019
1577

which of the following pairs of substances has the highest heat of neutralization?

  • A. strong acid and strong base
  • B. weak acid and weak base
  • C. strong acid and weak base
  • D. weak acid and strong base
View Answer & Discuss WAEC 2019
1578

When quicklime dissolves in water?

  • A. heat is absorbed
  • B. heat is evolved
  • C. oxygen is liberated
  • D. hydrogen is given off
View Answer & Discuss WAEC 2019
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1579

If the value of ΔH is positive for a reaction, it means that the reaction is?

  • A. exothermic
  • B. endothermic
  • C. spontaneous
  • D. slow
View Answer & Discuss WAEC 2019
1580

Which of the following compounds is formed by the oxidation of ethanol?

  • A. C\(_2\)H\(_4\)CO\(_2\)H
  • B. C\(_2\)H\(_5\)CO\(_2\)H
  • C. CH\(_3\)OH
  • D. CH\(_3\)CO\(_2\)H
View Answer & Discuss WAEC 2019
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts