Some Basic Concepts Of Chemistry Question 68
Question: 20 g of $ CaCO _3 $ on heating gave 8.8 g of $ CO _2 $ and 11.2 g of CaO. This is in accordance with
Options:
A) The law of conservation of mass.
B) The law of constant composition.
C) The law of reciprocal proportion.
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ \underset{20g}{\mathop{CaCO _3}},\to \underset{8.8g}{\mathop{CaO}},+\underset{11.2g}{\mathop{CO _2}}, $ mass of reactant = mass of products = 20g. Hence the law of conservation of mass is obeyed.
