Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q.When light is shined on a mixture of chlorine and ethane, chloroethane is formed besides dichloroethane, trichloroethane and several other products. What reaction condition can optimise the yield of chloroethane?a)Higher reaction temperatureb)High concentration of chlorine gasc)Excess of ethane reactand)Low reaction temperatureCorrect answer is option 'C'. Can you explain this answer?

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Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. When light is shined on a mixture of chlorine and ethane, chloroethane is formed besides dichloroethane, trichloroethane and several other products. What reaction condition can optimise the yield of chloroethane?

a)
Higher reaction temperature
b)
High concentration of chlorine gas
c)
Excess of ethane reactan
d)
Low reaction temperature

Correct answer is option 'C'. Can you explain this answer?

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Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice qu...

When chlorine and Ethane are taken with chlorine in excess only then we have more than one product like chloroethane, dichloroethane, trichloroethane etc. To avoid this we should take Ethane in excess because when we will take it then in excess then we will have only single time chlorination and we will get monochloroethane.

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Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice qu...

**Explanation:**

To optimize the yield of chloroethane in the reaction between chlorine and ethane, the following conditions need to be considered:

**1. Excess of Ethane Reactant:**
- The reaction between chlorine and ethane is a substitution reaction, where a chlorine atom replaces a hydrogen atom in ethane.
- By using an excess of ethane, it ensures that there is a higher concentration of ethane molecules available for the reaction.
- This increases the chances of the chlorine atom reacting with ethane to form chloroethane, rather than reacting with other chlorine atoms to form dichloroethane or trichloroethane.

**2. Lower Reaction Temperature:**
- A lower reaction temperature favors the formation of chloroethane.
- At lower temperatures, the reaction is slower and the selectivity towards chloroethane formation is higher.
- This is because at lower temperatures, the energy barrier for the desired reaction is lower compared to the energy barriers for the formation of other products.
- As a result, a higher proportion of the chlorine atoms react with ethane to form chloroethane.

**3. High Concentration of Chlorine Gas:**
- While a higher concentration of chlorine gas may increase the yield of chloroethane, it can also lead to the formation of other products such as dichloroethane and trichloroethane.
- Therefore, it is not the most optimal condition for maximizing the yield of chloroethane.

**4. Higher Reaction Temperature:**
- A higher reaction temperature may increase the rate of the reaction but it also leads to the formation of a larger number of by-products.
- The increased temperature provides more energy to the system, resulting in a higher collision frequency and more reactive collisions.
- This can lead to the formation of multiple products, including dichloroethane and trichloroethane, in addition to chloroethane.

In conclusion, to optimize the yield of chloroethane in the reaction between chlorine and ethane, it is best to use an excess of ethane reactant and lower the reaction temperature. These conditions increase the selectivity towards chloroethane formation and reduce the formation of by-products.

Answered by Mohit Rajpoot · View profile

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Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice qu...

If excess of ethane reactant is taken then their will be more reactant and henceforth more product
This is according to Le chatliers Principle

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Direction (Q. Nos. 1 - 11) This section contains 11 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.Q.When light is shined on a mixture of chlorine and ethane, chloroethane is formed besides dichloroethane, trichloroethane and several other products. What reaction condition can optimise the yield of chloroethane?a)Higher reaction temperatureb)High concentration of chlorine gasc)Excess of ethane reactand)Low reaction temperatureCorrect answer is option 'C'. Can you explain this answer?

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