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When coal of purity 60% is allowed to burn in presence of insufficient oxygen, 60% of carbon is converted into 'CO' and the remaining is converted into 'CO₂'. The heat generated when 0.6 kg of coa

Question

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When coal of purity 60% is allowed to burn in presence of insufficient oxygen, 60% of carbon is converted into 'CO' and the remaining is converted into 'CO₂'. The heat generated when 0.6 kg of coal is burnt is:

(1) 1600 kJ  (2) 3200 kJ  (3) 4400 kJ  (4) 6600 kJ

Canvas Classes · Accepted Answer

Strategy:
 Determine the total moles of carbon available after accounting for purity. Divide the moles between the two product paths according to the given percentages, then sum the heat released from both reactions.

Step 1: Moles of Carbon
Mass of pure coal .
Moles of .

Step 2: Distribute moles
- Moles forming .
- Moles forming .

Step 3: Total Heat

.

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