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Enthalpy of Solution

36. 1.25 g of...

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36. 1.25 g of sample of limestone on heating gives 0.44 g carbon dioxide. The percentage purity of CaCO3 in limestone is

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1.25

g of sample of limestone on heating gives

0.44

g carbon dioxide. The percentage purity of

C a C O_{3}

in limestone is:

12.5

g of an impure sample of limestone on heating gives

4.4

g of carbon dioxide. The percentage purity of

C a C O_{3}

in the sample is:

10 g

of limestone on heating produces

4.2 g

C a O

. the percentage purity of

C a {C O}_{3}

in limestone is:

[Atomic mass of

C a =

40

150 m L

N / 10 H C l

is required to react completely with

1.0 g

of a sample of limestone. Calculate the percentage purity of calcium carbonate.

200 g

of a calcium carbonate sample decomposes on heating to give carbon dioxide and

80 g

of calcium oxide. What will be the percentage purity of calcium carbonate in the sample?
(

G i v e n : C a C O_{3} \to C a O + C O_{2}

)

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