Chemistry
Grade-9
Easy
Question
How many grams of CO2 is produced when 2.09mole of HCl is reacted with calcium carbonate?
- 26 gm
- 46 gm
- 23 gm
- 20 gm
Hint:
2 mole HCl reacts to give 1 mole CO2.
The correct answer is: 46 gm
CaCO3 + 2HCl 
CaCl2 + CO2 + H2O
2 mole HCl reacts to give 1 mole CO2
2.09 moles of HCl reacts with calcium carbonate gives 1.045 moles of CO2 i.e. 46gm.
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