What are the product obtained when butene undergoes addition reaction of HBr in different conditions.
(i) In absence of peroxide
(ii) In presence of peroxide

Explanation

To determine the products obtained when butene undergoes an addition reaction with HBr under different conditions, we will analyze the reactions in two scenarios: (i) in the absence of peroxide and (ii) in the presence of peroxide.

### Step-by-Step Solution:

**Step 1: Identify the structure of butene.**
- Butene can be either 1-butene (CH₃CH₂CH=CH₂) or 2-butene (CH₃CH=CHCH₃).

**Step 2: Reaction of 1-butene with HBr in the absence of peroxide.**
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