$$15.6$$ gram mixture of $$Na2CO3$$ and $$CaCO3$$ on strong heating produced $$2.2$$ grams of $$CO2$$ . Percentage of sodium carbonate in the mixture is

Question

$$15.6$$ gram mixture of $$Na2CO3$$ and $$CaCO3$$ on strong heating  produced $$2.2$$ grams of $$CO2$$ . Percentage of  sodium carbonate in the mixture is

Infinity Learn · Accepted Answer

$$Na2CO3$$ cannot undergo thermal decomposition; All the $$CO2liberated$$ is from $$CaCO3$$∴$$CaCO3s$$ → CaOs $$+$$ $$CO2g$$              $$100g$$                                                             $$44g$$                      'X'                                                                $$2.2g$$ X $$=$$ $$5g$$∴ $$Wcaco3$$ $$=$$ $$5gWNa2CO3$$ $$=$$ $$15.6$$−$$5g$$                             $$=$$   $$10.6g$$% of  $$Na2CO3$$ in  the  initial  mixture  $$=$$ $$10.615.6$$×$$100$$                                                                                                                            $$=$$ $$68$$%

15.6 gram mixture of Na2CO3 and CaCO3 on strong heating produced 2.2 grams of CO2 . Percentage of sodium carbonate in the mixture is

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