Question

An important environmental consideration is the appropriate disposal of cleaning solvents. An
environmental waste treatment company analysed a cleaning solvent, J, and found it to contain
the elements carbon, hydrogen, and chlorine only. The chemical composition of J was determined
using different analytical chemistry techniques.
Combustion reaction:
Combustion of 1.30 g of I gave 0.872 g CO2 and 0.089 g H20.
Precipitation reaction with AgNO3(aq):
0.535 g of J gave 1.75 g AgCl precipitate.
(a) Determine the percentage by mass of carbon and hydrogen in J, using the combustion
data.
(b) Determine the percentage by mass of chlorine in J, using the precipitation data.
(c) The molar mass was determined to be 131.38 g mol-'. Deduce the molecular formula
of J.
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Answer 1

Answer:

I want a doubt option a or option b