The curves below represent the volume of carbon (IV) oxide gas evolved once 2M(concentrated) hydrochloric acid was reacted with 100g of powdered calcium carbonate and...

The curves below represent the volume of carbon (IV) oxide gas evolved once 2M(concentrated) hydrochloric acid was reacted with 100g of powdered calcium carbonate and also when 1M concentrated hydrochloric acid was reacted with the same quantity of carbonate.

(i) Which of the two curves represents the reaction of 2M concentrated HCl with powdered calcium carbonate. Give a reason.
(ii) Why do the two curves flatten at the same level of production of CO₂.

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(i) - P
- It reacts with the carbonate faster and the reaction ends earlier.
(ii) The same quantities of reactants have been used hence total volume of gas evolved is the same.

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sharon kalunda answered the question on March 27, 2019 at 11:45

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