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4171

Increasing the temperature generally

  • A. decreases the solubility of a solid in a liquid but increases the solubility of a gas in a liquid.
  • B. increases the solubility of a solid in a liquid but decreases the solubility of a gas in a liquid.
  • C. increases the solubility of both a solid and a gas in a liquid
  • D. decreases the solubility of both a solid and a gas in a liquid
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4172

A white precipitate was formed when BaCl\(_{2(aq)}\) was added to an aqueous solution
of a salt X. The precipitate dissolved in dilute HCl with rapid effervescence. Salt X is likely to contain

  • A. SO\(_{4}\) \(^{2-}\) ions
  • B. SO\(_{3}\) \(^{2-}\) ions
  • C. NO\(_{3}\)- ions
  • D. CO\(_{3}\) \(^{2-}\)- ions
View Answer & Discuss (4) WAEC 2022
4173

Before a reaction could take place, there should be

  • A. ionization of reactant particles
  • B. breakage of bonds of products
  • C. breakage of bonds of reactants
  • C. ionization of product particles
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4174

Consider the following reaction equation:
CaO + SiO\(_{2}\) ------> CaSiO\(_{3}\)
Silicon(IV) oxide is acting as

  • A. a basic oxide
  • B. a reducing agent
  • C. an acidic oxide
  • D. an oxidizing agent
View Answer & Discuss (1) WAEC 2022
4175

Which of the following acids would form normal salt only?

  • A. Tetraoxosulphate(VI) acid
  • B. Trioxonitrate(V) acid
  • C. Tetraoxophosphate(V) acid
  • D. Trioxosulphate(IV) acid
View Answer & Discuss (11) WAEC 2022
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