Chalk is a mixture of CaCO3 and CaSO4. When added to HCI,

Last updated: 8/5/2022

Chalk is a mixture of CaCO3 and CaSO4. When added to HCI, only the CaCO3 reacts according to the reaction: CaCO3(s) + 2 HCI (aq) → CaCl₂ (aq) + CO₂(g) + H₂(1) When a 7.54 g piece of chalk is placed in HCI, 2.68 of CO2 is produced. What percentage of the chalk is CaCO3? 41.2% 80.8% 61.9 % 59.1 % 37.3 %