Some carbon dioxide is to be generated by reacting 50 g of calcium carbonate with a solution of hydrochloric acid - VCE - SSCE Chemistry - Question 2 - 2002 - Paper 1
Question 2
Some carbon dioxide is to be generated by reacting 50 g of calcium carbonate with a solution of hydrochloric acid.
Which of the following actions is least likely to... show full transcript
Worked Solution & Example Answer:Some carbon dioxide is to be generated by reacting 50 g of calcium carbonate with a solution of hydrochloric acid - VCE - SSCE Chemistry - Question 2 - 2002 - Paper 1
Step 1
A. grinding the calcium carbonate to a fine powder
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Grinding calcium carbonate increases the surface area in contact with hydrochloric acid, enhancing the reaction rate.
Step 2
B. raising the temperature
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Increasing the temperature generally increases the reaction rate due to higher kinetic energy of molecules.
Step 3
C. raising the atmospheric pressure
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Increasing atmospheric pressure has little effect on this reaction because it involves a solid (calcium carbonate) and a liquid (hydrochloric acid), where volume changes are minimal.
Step 4
D. raising the concentration of hydrochloric acid
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Increasing the concentration of hydrochloric acid leads to more acid molecules being available to react with calcium carbonate, thus increasing the reaction rate.
