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Amorphous Forms of Carbon

35. 5g of MnO...

Question

35. 5g of MnO2 on Rx with HCl forms 1.12L of Cl2 gas at S.T.P , The percentage impurity of MnO2 is ?

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Solution

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10 g

M n O_{2}

2.24 L

{C I_{2}}_{(g)}

M n O_{2}

M n O_{2} + 4 H C I \to M n C I_{2} + C I_{2} + 2 H_{2} O

8.7

M n O_{2}

H C l

C l_{2}

K I

80

\frac{N}{10}

M n O_{2}

M n O_{2}

H C l

1.2

5 %

1.12 L

C l_{2}

M n O_{2} + 4 H C l \to M n C l_{2} + 3 H_{2} O + C l_{2}

x

M n O_{2}

H C l

1.2 g

m L^{- 3}

5 %

1.12 L

C l_{2}

M n O_{2} + 4 H C l \to M n C l_{2} + 3 H_{2} O + C l_{2}

10

M n O_{2}

H C l

0.1

C l_{2}

M n = 55

M n O_{2}

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