How much of lime can be obtained by burning 400 g of lime stone? (1) 224 g (2) 220 g (3) 400 g (4) 320 g
Pls give elaborate explanation
Answers
Correct option is
(1) 224 kg
The chemical equation for decomposition of limestone can be written as:
CaCO 3 →CaO+CO 2
100 kg of CaCO
produces 56 kg of CaO.
400 kg of CaCO 3
produces
100
56×400 =224 kg.
Hence, option (1) is correct.
Mark my answer as brainliest please.
224 grams of Lime is obtained by burning 400 grams of Limestone. Hence the correct option is (1) 224 g.
Given:
The mass of Limestone present = 400 g
To Find:
The lime obtained from 400 g of Limestone?
Solution:
→ The reaction for the thermal decomposition of Limestone (CaCO₃) into Lime (CaO) and Carbon dioxide (CO₂) is given as:
CaCO₃ → CaO + CO₂
→ 1 mole of Limestone (CaCO₃) decomposes into 1 mole of Lime (CaO) and 1 mole of Carbon dioxide (CO₂).
CaCO₃ → CaO + CO₂
No. of Moles: 1 1 1
Mass in grams: 100 56 44
→ It can also be said that 100 grams of Limestone (CaCO₃) decompose into 56 grams of Lime (CaO) and 44 grams of Carbon dioxide (CO₂).
→ In the given question:
The mass of Limestone present = 400 g
∵ 100 grams of Limestone produces 56 grams of Lime.
∴ Lime produced from 400 grams of Limestone = (56/100) × 400 = 224 g
Therefore 224 grams of Lime is obtained by burning 400 grams of Limestone. Hence the correct option is (1) 224 g.
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