At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of for complete combustion, and 40 mL of is formed. The formula of the hydrocarbon is:

Question

At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of  for complete combustion, and 40 mL of  is formed. The formula of the hydrocarbon is:

Canvas Classes · Accepted Answer

Strategy:
 At constant temperature and pressure, use volume ratios in place of mole ratios. Determine the Carbon count () from the  produced and then use the Oxygen consumption to find the Hydrogen count ().

Step 1: Find Carbon atoms (x)
Volume of , Volume of fuel .

Step 2: Find Hydrogen atoms (y)
Reaction: 
Volume of , so stoichiometric coefficient .

Step 3: Assemble formula
The formula is .

More questions from Some Basic Concepts of Chemistry (Mole Concept)