Which branched chain isomer of the hydrocarbon with molecular mass 72u...
Neopentane has all same type of hydrogen and has molecular weight 72u
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Which branched chain isomer of the hydrocarbon with molecular mass 72u...
Answer:
To determine the branched chain isomer of the hydrocarbon with a molecular mass of 72u that gives only one isomer of mono substituted alkyl halide, we need to analyze the different options provided.
Neopentane:
- Neopentane (C5H12) has a molecular mass of 72u.
- It is a highly branched hydrocarbon with four carbon atoms bonded to a central carbon atom.
- If we substitute one hydrogen atom of neopentane with a halogen atom, we will get only one isomer of mono substituted alkyl halide.
- This is because all the carbon atoms in neopentane are equivalent, and substituting any one of them with a halogen atom will result in the same product.
Neohexane:
- Neohexane (C6H14) has a molecular mass of 86u, which is not 72u as required.
- Therefore, it is not the correct answer.
Tertiary butyl chloride:
- Tertiary butyl chloride (C4H9Cl) has a molecular mass of 92.6u, which is not 72u as required.
- Therefore, it is not the correct answer.
Isohexane:
- Isohexane (C6H14) has a molecular mass of 86u, which is not 72u as required.
- Therefore, it is not the correct answer.
Conclusion:
- Among the given options, only neopentane (option A) has a molecular mass of 72u.
- Neopentane is a highly branched hydrocarbon with four carbon atoms bonded to a central carbon atom.
- Substituting one hydrogen atom of neopentane with a halogen atom will result in only one isomer of mono substituted alkyl halide.
- Therefore, option A, neopentane, is the correct answer.