Arrange the following `0.1M` solutions in order of increasing `pH`:
`H_(2)CO_(3),HBr, HI, NH_(3), KCN, NaOH, NH_(4)Br`

Explanation

To arrange the given `0.1M` solutions in order of increasing `pH`, we need to identify the nature of each solution (acidic, neutral, or basic) and their relative strengths. Here’s a step-by-step breakdown:

### Step 1: Identify the solutions and their nature
- **Acids**:
- `H2CO3` (carbonic acid) - weak acid
- `HBr` (hydrobromic acid) - strong acid
- `HI` (hydroiodic acid) - strong acid
- **Salts**:
...