Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

A large excess of marble chips was allowed to react with $25\text{ cm}^3$ of $1.0\text{ mol dm}^{-3}$ hydrochloric acid at $40^\circ\text{C}$. What difference will be seen if the reaction is carried out again using $60\text{ cm}^3$ of $0.5\text{ mol dm}^{-3}$ hydrochloric acid at $40^\circ\text{C}$?

  • AThe reaction is faster and less of the products are made.
  • BThe reaction is faster and more of the products are made.
  • CThe reaction is slower and less of the products are made.
  • DThe reaction is slower and more of the products are made.

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