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Q. No.A substance has an empirical formula of \(\text{CH}_2.\) Its molar mass is determined in a separate experiment as \(83.5.\)
What is the most probable molecular formula for this compound?
1. \(\text{C}_2\text{H}_4 \)
2. \(\text{C}_6\text{H}_{12}\)
3. \(\text{C}_4\text{H}_{2}\)
4. \(\text{CH}_{12}\)
What is the most probable molecular formula for this compound?
1. \(\text{C}_2\text{H}_4 \)
2. \(\text{C}_6\text{H}_{12}\)
3. \(\text{C}_4\text{H}_{2}\)
4. \(\text{CH}_{12}\)
Subtopic: Empirical & Molecular Formula |
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Level 1: 80%+
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The molecular formula of a compound with an empirical formula of CH₂O and a molecular mass of 180 g is:
1.
2.
3.
4.
Subtopic: Empirical & Molecular Formula |
89%
Level 1: 80%+
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Which of the following compounds has the same empirical formula as that of glucose?
1. \(CH_3CHO\)
2. \(CH_3COOH\)
3. \(CH_3OH\)
4. \(C_2H_6\)
1. \(CH_3CHO\)
2. \(CH_3COOH\)
3. \(CH_3OH\)
4. \(C_2H_6\)
Subtopic: Empirical & Molecular Formula |
84%
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What is the ratio of empirical formula mass to molecular formula mass of benzene?
1. \(1:6\)
2. \(2:3\)
3. \(6:1\)
4. \(3:2 \)
1. \(1:6\)
2. \(2:3\)
3. \(6:1\)
4. \(3:2 \)
Subtopic: Empirical & Molecular Formula |
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A compound is composed of carbon, hydrogen, and oxygen. The percentage composition by mass is 40% carbon and 6.67% hydrogen, with the remaining percentage being oxygen. Determine the empirical formula of the compound:
1.
2.
3.
4.
Subtopic: Empirical & Molecular Formula |
83%
Level 1: 80%+
AIPMT - 1999
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Determine the empirical formula for a compound that is 25% hydrogen and 75% carbon:
| 1. | \( \text{CH}\) | 2. | \(\text{CH}_2\) |
| 3. | \(\text{CH}_4\) | 4. | \(\text{C}_2\text{H}_8\) |
Subtopic: Empirical & Molecular Formula |
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An organic compound consists of carbon, hydrogen, and nitrogen. Upon elemental analysis, it is found to contain 40% carbon, 13.3% hydrogen, and 46.67% nitrogen by mass. Determine the empirical formula of the compound.
1. CHN
2. C2H2N
3. CH4N
4. C2H7N
Subtopic: Empirical & Molecular Formula |
83%
Level 1: 80%+
Hints
Which of the following molecules has the empirical formula \(\mathrm{CH_2O}\)?
| 1. | \(\mathrm{CH_3CHO}\) |
| 2. | \(\mathrm{HO-CH_2-CH_2-OH}\) |
| 3. | \(\mathrm{COOH\\ ~|\\ COOH}\) |
| 4. | \(\mathrm{CH_3COOH}\) |
Subtopic: Empirical & Molecular Formula |
80%
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