Some Basic Principles Of Organic Chemistry Question 73
Question: On analysis, a saturated hydrocarbon is found to contain 83.70 percent carbon and 16.30% hydrogen. The empirical formula will be (at. wt. of C=12, at. wt. of H = 1) [MP PMT 1995]
Options:
A) $ C_3H_6 $
B) $ C_3H_8 $
C) $ C_3H_7 $
D) $ C_6H_{12} $
Show Answer
Answer:
Correct Answer: C
Solution:
| Element | No.of moles | Simple ratio |
|---|---|---|
| C = 83.7% | 83.7/12 = 6.9 | 6.9/6.9 = 1 × 3 = 3 |
| H = 16.3% | 16.3/1 = 16.3 | 16.3/0.9 = 2.3 × 3 = 7 |
Empirical formula = $ C_3H_7 $ .
