Question:
116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the atomic masses of H, O and C are 1, 16 and 12, respectively. The data agrees with how many formulae of the following? _______
A. \(CH_3COOH\)
B. \(HCHO\)
C. \(CH_3OOCH_3\)
D. \(CH_3CHO\)
116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the atomic masses of H, O and C are 1, 16 and 12, respectively. The data agrees with how many formulae of the following? _______
A. \(CH_3COOH\)
B. \(HCHO\)
C. \(CH_3OOCH_3\)
D. \(CH_3CHO\)
A. \(CH_3COOH\)
B. \(HCHO\)
C. \(CH_3OOCH_3\)
D. \(CH_3CHO\)
Updated On: Feb 4, 2026
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Correct Answer: 2
Solution and Explanation
| Element | Mass% | Moles% | Relative moles |
|---|---|---|---|
| H | 6.46 | 6.46 | 2 |
| O | 51.72 | 3.23 | 1 |
| C | 41.81 | 3.48 | 1 |
\(∴\) Empirical formula = \(COH_2\)
The empirical formula goes with acetic acid \(CH_3COOH\) and formaldehyde \(HCHO.\)
Thus data agrees with \(2\) formulae.
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(+) A positive sign indicates an increase in the concentration of B with time.
Factors Determining the Rate of a Reaction:
There are certain factors that determine the rate of a reaction:
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