Question

Caco, decomposes to give CaO and Cog, if the
masses of CaO and Co, produced are 5.6 g and
4.4 g respectively by heating 12 g of an impure
Caco, sample then the % impurity of the sample
will be
(1) 33.33%
(2) 16.67%
(3) 83.33%
(4) 20%​

Answer 1

Answer:

I am not exactly correct but I think it can be the answer.

Ans. Impurity obtained = 12 - (5.6+4 4)

= 12 - 10

= 2g

Thus, %age impurity = (2/12)×100

= 100/6

= 16.67 %

hope it helps..........

Answer 2

Answer:

16.67 absolutely right answer