A student investigates the rate of reaction between dilute hydrochloric acid and magnesium carbonate. She wants to find out how the concentration of the acid changes the rate of reaction. Fig. 18.1 shows the apparatus she uses. Carbon dioxide gas is given off in the reaction. The student measures the loss in mass every 30 seconds for 5 minutes. Another student also investigates the rate of reaction between dilute hydrochloric acid and magnesium carbonate. Fig. 18.2 shows diagrams of some of the apparatus he uses.The student also wants to find out how the concentration of the acid changes the rate of reaction. Describe the method he follows using the apparatus in Fig. 18.2. Include a labelled diagram of the set-up of the apparatus he uses. – 7565

One thought on “A student investigates the rate of reaction between dilute hydrochloric acid and magnesium carbonate. She wants to find out how the concentration of the acid changes the rate of reaction. Fig. 18.1 shows the apparatus she uses. Carbon dioxide gas is given off in the reaction. The student measures the loss in mass every 30 seconds for 5 minutes. Another student also investigates the rate of reaction between dilute hydrochloric acid and magnesium carbonate. Fig. 18.2 shows diagrams of some of the apparatus he uses.The student also wants to find out how the concentration of the acid changes the rate of reaction. Describe the method he follows using the apparatus in Fig. 18.2. Include a labelled diagram of the set-up of the apparatus he uses. – 7565”

1. I would set up a conical flask containing dilute hydrochloric acid and magnesium carbonate, connected by a delivery tube to a gas syringe to collect the gas.
   I would measure a known volume of acid, add a known mass of magnesium carbonate, and record the volume of gas produced every 30 seconds.
   I would then repeat the experiment using different concentrations of acid.

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