How much CaO is obtained when 95 - pure 200 kg of CaCO 3 is heated-A- 100B- 105-4C- 106-4D- 107-4

The correct option is C 106.4 CaCO_3 decomposes when heated as CaCO_3 → CaO + CO_2 95% pure of 200kg ⇒ 95/100 × 200= 190 kg For CaCO_3 (M = 100u) ∴ 100g of CaC ...

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Standard XII

Chemistry

Derivation of Kp and Kc

How much CaO ...

Question

How much CaO is obtained when 95% pure $200 k g$ of $C a C O_{3}$ is heated?

100

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105.4

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106.4

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107.4

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Solution

The correct option is C
106.4

$C a C O_{3}$ decomposes when heated as

$C a C O_{3} \to C a O + C O_{2}$

$95 %$ pure of 200kg $\Rightarrow$ $\frac{95}{100} \times 200 = 190 k g$

For $C a C O_{3}$ ( $M$ = $100 u$ )

$∴$ 100g of $C a C O_{3}$ = 56g of $C a O$

$∴$ 190kg of $C a C O_{3}$ = 56 X190/100kg =106.4kg of $C a O$

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How much CaO is obtained when 95% pure 200kg of CaCO3 is heated?

The correct option is C 106.4 CaCO3 decomposes when heated as CaCO3 →CaO+CO2 95% pure of 200kg ⇒ 95100 ×200=190 kg For CaCO3 (M = 100u) ∴ 100g of CaCO3 = 56g of CaO ∴ 190kg of CaCO3 = 56 X190/100kg =106.4kg of CaO

How much CaO is obtained when 95% pure $200 k g$ of $C a C O_{3}$ is heated?