Question

46. 10g of a mixture of CaCO, and Na,Co, on
ignition suffered a loss in weight of 2.2g. The
mass ratio of CaCO, and Na,C02 is
1) 1:1
2) 1:1.4
3) 1.4:1
4) 1.75:1​

Answer 1

Answer:

Answer:1)1:1

Explanation:

Na2CO3 is thermally stable and does not decompose on ignition but CaCO3 decompse 

to give CO2.

CaCO3 → CaO + CO2

1mole i.e 100gm of CaCO3 gives 44 gm of CO2.

Wt.of CaCO3 giving 2.2 gm of CO2 =( 2.2X100/44)=5gm

Wt.of CaCO3 =5gm,

Wt.of Na2CO3=10-5=5gm,

There foe ratio of wts=1:1

Explanation:

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