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Quiz – Acids, bases and salts

Can you confidently identify acids and bases? What about their conjugates? Test yourself with this quiz.

Your turn – acids, bases and salts

For questions 1–5, identify the chemical species as a Brønsted–Lowry acid or base:

  1. \(\ce{HClO4}\)

Acid

  1. \(\ce{HCOOH}\)

Acid

  1. \(\ce{CN}^{-}\)

Base

  1. \(\ce{SO}_{3}^{2-}\)

Base

  1. \(\ce{H2S}\)

Acid

For questions 6–10, write the chemical formulas for each of the following:

  1. the conjugate acid of \(\ce{HS}^{-}\)

\(\ce{H}_{2}\ce{S}\)

  1. the conjugate base of \(\ce{NH}_{4}^{+}\)

\(\ce{NH}_{3}\)

  1. the conjugate acid of \(\ce{PO}_{4}^{3-}\)

\(\ce{HPO}_{4}^{2-}\)

  1. the conjugate acid of \(\ce{HC2O4}^{-}\)

\(\ce{H2C2O4}\)

  1. the conjugate base of \(\ce{H2CO3}\)

\(\ce{HCO}_{3}^{-}\)v

For questions 11–13, classify the acids as monoprotic, diprotic or triprotic:

  1. \(\ce{H2SO4}\)

Diprotic

  1. \(\ce{HClO4}\)

Monoprotic

  1. \(\ce{H3PO4}\)

Triprotic