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Chemistry WAEC Past Questions

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1101
Consider the following reaction equation
H3O+(aq) + OH(aq) \(\rightarrow\) 2H2O(1)
The reaction represents
  • A. Esterification
  • B. Hydrolysis
  • C. Neutralization
  • D. Redox
View Answer & Discuss WAEC 2016
1102
The refreshing characteristic taste of fizzy drinks is due ot the presence of
  • A. Carbon(IV)oxide
  • B. Glucose
  • C. Hydrogen
  • D. Sodium Citrate
View Answer & Discuss (1) WAEC 2016
1103
Chemical equilibrium is attained when
  • A. All the reactants have been completely used up
  • B. The reaction goes to completion
  • C. The concentration of reactants and products remain constant
  • D. The concentration of reactants and products are equal
View Answer & Discuss (10) WAEC 2016
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1104

Which of the following factors will affect the rate of the reaction represented by the following equation?
2HCl(aq) + CaCO3(s) \(\rightarrow\) CaCl2(aq) + H2O(1) + CO2(g)

I. Pressure
II.Concentration
III. Nature of reactants
IV. Temperature

  • A. I and II only
  • B. II, III and IV only
  • C. I, II and III only
  • D. I, II. III and IV
View Answer & Discuss (9) WAEC 2016
1105

On evaporation to dryness, 350cm\(^3\) of saturated solution of salt Z gave 55.5g of salt. What is the solubility of the salt? [Z = 101]

  • A. 1.57 moldm-3
  • B. 3.14 moldm-3
  • C. 6.28 moldm-3
  • D. 12.56 moldm-3
View Answer & Discuss (2) WAEC 2016
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