Question

When a gas 'X' is passed through a solution 'Y' formed a white precipitate in the test tube. The student
continued to pass gas 'X' and observed that the precipitate formed is disappeared by forming Z gas X
is the main component in photosynthetic reaction. Identify the correct statement.

A) Y is lime water
B) Z is calcium bicarbonate
C) gas 'X' is CO2
D) All
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Answer 1

Answer:

option D because CaCO3(insoluble salt) is formed when CO2 is passed to Ca(OH)2

If excess CO2 is passed to the same solution(lime water),it forms CaHCO3 which is a soluble salt