The ratio of mass percentages of C&H and C&O of a saturated acyclic organic compound X are 4:1 and 3:4 respectively. The moles of required for complete combustion of 2 moles of X is .

Question

The ratio of mass percentages of C&H and C&O of a saturated acyclic organic compound X are 4:1 and 3:4 respectively. The moles of  required for complete combustion of 2 moles of X is .

Canvas Classes · Accepted Answer

Strategy:
 Solve for the empirical formula using the mass percentage ratios. Identify the compound, then use its balanced combustion equation for 2 moles.

Step 1: Solve for atomic ratios
Let  be mass of C.
- .
- .
Ratio .
This matches the formula  (Methanol).

Step 2: Balanced Combustion

For 2 moles of Methanol, 3 moles of  are required.

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