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the mass of CO 2 that shall be obtained by heating 10 kg of 80% pure limestone(CaCO 3 ) is_ 4.4 kg 6.6kg 3.52kg 8.8 kg

the mass of CO2 that shall be obtained by heating 10 kg of 80% pure limestone(CaCO3) is_
  1. 4.4 kg
  2. 6.6kg
  3. 3.52kg
  4. 8.8 kg

Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
576-1473_1.PNG
Vikas TU
14149 Points
4 years ago
Dear student 
Above explanaton is incorrect
Molar mass of Caco3 = 100g 
10kg 100% pure CaCo3 = 10kg Caco3 
10kg 80% pure Caco3 = 8 kg CaCo3 
No of moles of CaCo3 = 8*1000/100
= 80 moles
1 mle of CaCo3  gives 1 mole of co2 
80 moles of CaCo3  gives 80 moles of co2 
1 mole of Co2 = 44g 
80 moles of Co2 = 80*44 
= 3.52 kg of Co2
 
 
 
 
 
 
 
         
 
 

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