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This question is about the rate of reaction between calcium carbonate and dilute hydrochloric acid - Edexcel - GCSE Chemistry - Question 6 - 2021 - Paper 1
Question 6
This question is about the rate of reaction between calcium carbonate and dilute hydrochloric acid. The word equation for this reaction is calcium carbonate + hydr... show full transcript
Worked Solution & Example Answer:This question is about the rate of reaction between calcium carbonate and dilute hydrochloric acid - Edexcel - GCSE Chemistry - Question 6 - 2021 - Paper 1
Step 1
Step 2
Complete the diagram in Figure 7 to show the apparatus to collect the gas produced and measure its volume.
Answer
To complete the diagram:
- Include a delivery tube with a bung connected to the conical flask.
- The delivery tube should lead into a water trough below the upright measuring cylinder, which will be used to collect the gas.
- Ensure the measuring cylinder is labeled for clarity, and indicate how the delivery tube connects to it, pointing upward into the water.
Step 3
State what could be used to keep the temperature of the conical flask and its contents at a temperature of 45°C throughout the reaction.
Answer
A water bath should be used to maintain the temperature at 45°C. This method allows for even heat distribution and prevents overheating, unlike using a Bunsen burner, which could introduce fluctuating temperatures.