Question 11
Calcium carbonate (CaCO₃) is present in the skeleton of corals, which is much affected by acidification of the ocean because of its reaction with acids that produces carbonic acid (H₂CO₃). The latter in turn decomposes into water and carbon dioxide. In an experiment, a researcher dissolved 2.35 g of CaCO₃ in 167 mL of 0.175 M HCl. How much volume of CO₂ at room temperature (25 C) and ambient pressure would this reaction release? Use the following atomic weights: Ca=40, C=12, O=16, H=1, Cl=35
A. 35.7 mL
B. 71.5 mL
C. 575 mL
D. 1.15 L
Editorial review: assess the printed choices and explain any scientific inconsistency. State any assumptions used.
A. 35.7 mL
B. 71.5 mL
C. 575 mL
D. 1.15 L
Editorial review: assess the printed choices and explain any scientific inconsistency. State any assumptions used.