Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

A gas is given off at point P in the apparatus shown. Which gas makes the damp universal indicator paper turn red most rapidly?

  • Aammonia, $\text{NH}_3$
  • Bchlorine, $\text{Cl}_2$
  • Chydrogen chloride, $\text{HCl}$
  • Dsulfur dioxide, $\text{SO}_2$

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