In the presence of platinum catalyst, hydrocarbon A adds hydrogen to form n-hexane. When hydrogen bromide is added to A instead of hydrogen only a single bromo compound is formed. Which of the following is A?

Question

In the presence of platinum catalyst, hydrocarbon A adds hydrogen to form n-hexane. When hydrogen bromide is added to A instead of hydrogen only a single bromo compound is formed. Which of the following is A? (A)  CH3- CH2- CH=CH-CH2- CH3 (B) CH3 -CH2 -CH2 -CH=CH-CH3 (C) CH3 -CH = CH- CH2 -CH2-CH3 (D) CH2 = CH- CH2 -CH2-CH2-CH3

Tardigrade Admin · Accepted Answer

Correct answer is (a) CH3- CH2- CH=CH-CH2- CH3

Q. In the presence of platinum catalyst, hydrocarbon $A$ adds hydrogen to form n-hexane. When hydrogen bromide is added to $A$ instead of hydrogen only a single bromo compound is formed. Which of the following is $A$ ?

$C H_{3} - C H_{2} - C H = C H - C H_{2} - C H_{3}$

$C H_{3} - C H_{2} - C H_{2} - C H = C H - C H_{3}$

$C H_{3} - C H = C H - C H_{2} - C H_{2} - C H_{3}$

$C H_{2} = C H - C H_{2} - C H_{2} - C H_{2} - C H_{3}$

Correct answer is (a) $C H_{3} - C H_{2} - C H = C H - C H_{2} - C H_{3}$

Q. In the presence of platinum catalyst, hydrocarbon A adds hydrogen to form n-hexane. When hydrogen bromide is added to A instead of hydrogen only a single bromo compound is formed. Which of the following is A?

CH3​−CH2​−CH=CH−CH2​−CH3​

CH3​−CH2​−CH2​−CH=CH−CH3​

CH3​−CH=CH−CH2​−CH2​−CH3​

CH2​=CH−CH2​−CH2​−CH2​−CH3​