The dand fblock elements - Result Question 53

####53. On heating chromite (FeCr2O4) with Na2CO3 in air, which of the following product is obtained?

[1999]

(a) Na2Cr2O7

(b) FeO

(c) Fe3O4

(d) Na2CrO4

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Solution:

  1. (d) Byheating chromite with Na2CO3,Na2CrO4 is obtained

4FeCr2O4+8Na2CO3+7O28Na2CrO4+2Fe2O3+8CO2



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