Worksheet: Acid–Base Reaction Equations

In this worksheet, we will practice writing balanced chemical equations for acid–base reactions and describing common patterns of reactivity.

Q1:

Write a balanced molecular equation for the acid–base reaction between barium hydroxide and nitric acid, including state symbols.

  • ABaOH()+HNO()Ba(NO)()+HO()aqaqaql3322
  • BBa(OH)()+2HNO()Ba(NO)()+2HO()23322aqaqaql
  • CBa(OH)()+HNO()BaNO()+2HO()22332aqaqsl
  • DBa(OH)()+HNO()BaNO()+2HO()22332aqaqaql
  • EBaOH()+HNO()BaNO()+HO()aqaqsl332

Q2:

Write a balanced molecular equation for the acid–base reaction between hydrogen hypochlorite (HOCl) and water, including state symbols.

  • AHOCl()+HO()HOCl()+2H()aqlaqaq222+
  • BHOCl()+HO()OCl()+HO()aqlaqaq23+
  • CHOCl()+HO()HCl()+H()+O()aqlaqgg222
  • DHOCl()+HO()HCl()+HO()aqlaqaq222
  • EHOCl()+HO()HOCl()+OH()aqlaqaq22+

Q3:

In dilute aqueous solutions, HF acts as a weak acid. However, pure liquid HF (boiling point = 19.5C) is a strong acid. When adding HNO3 to liquid HF, it acts like a base and accepts protons. The acidity of liquid HF can be increased by adding one of several inorganic fluorides that are Lewis acids and accept F ions (i.e., BF3 or SbF5).

Give a balanced chemical equation for the reaction of HNO3 with pure HF.

  • AHNO+HFHF+NO323
  • BHNO+HFHNO+F323+
  • CHNO+HFHF+NO32+3
  • DHNO+HFHNO+F323

Give a balanced chemical equation for the reaction of BF3 with pure HF.

  • ABF+HFBF+H34
  • BBF+HFHBF+F33
  • CBF+HFHBF+F33+
  • DBF+HFBF+H34+

Q4:

Which of the following statements is false?

  • AIn a reduction-oxidation reaction, the reducing agent loses electrons.
  • BA Lewis base may react by gaining protons.
  • CThe average change in oxidation state for atoms of an element undergoing a reduction-oxidation reaction can be zero.
  • DAcid-base reactions always produce a neutral solution.
  • EA Brønsted–Lowry acid reacts by losing protons.

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