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Introduction to Ecosystem Function

10g of a samp...

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10g of a sample of potassium chlorate gave on complete decomposition 2.24 litre of oxygen at N.T.P .what is the percentage purity of the sample?

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Q. 10 grams of a sample of potassium chlorate gave on complete decomposition, 2.24 litre of oxygen at S.T.P. Calculate the mass of KCl formed and volume of

O_{2}

liberated at same time? (KClO

_{3} \to

_{2}

)

70

gram of a sample of magnesite on treatment with excess of HCl gave

11.2

C O_{2}

at STP. The percentage purity of the sample is?

Q. Calculate the percent loss in weight after complete decomposition of a pure sample of potassium chlorate,

K C l O_{3} (s) \to K C l (s) + O_{2} (g)

50 g

N a O H

required for complete neutralisation of

1 l i t r e N H C l

. What is the percentage purity of

N a O H

?

Q. The percentage loss in weight after heating a pure sample of potassium chlorate will be:

[Molar mass of potassium chlorate

= 122.5

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