Based on the student's taste test, which determined that orange juice was the sweetest and lemon and lime juices were the sourest, which is the best inference the student could make about acidity?



Answer :

Certainly! Let’s walk through the information and deduce the best inference about acidity based on the student's observations.

### Given Information:
1. The student tasted different juices and found:
- Orange juice was the sweetest.
- Lemon and lime juices were the sourest.

2. We have the pH values of four common fruit juices:

| Juice Type | pH |
|------------|----|
| Grapefruit | 3.0 |
| Lemon | 2.5 |
| Lime | 2.5 |
| Orange | 3.5 |

### Observations:
- Sweetest Juice: Orange Juice has a pH of 3.5.
- Sourest Juices: Lemon and Lime Juices both have a pH of 2.5.

### Understanding pH and Acidity:
- The pH scale ranges from 0 to 14, with lower values indicating higher acidity.
- A pH of 7 is neutral (e.g., pure water), values below 7 are acidic, and values above 7 are basic or alkaline.

### Inference From Observations:
- Lemon and Lime Juices: These juices have a pH of 2.5. Since they are the sourest, this indicates high acidity.
- Orange Juice: This juice has a pH of 3.5 and is the sweetest among those tested, indicating lower acidity compared to lemon and lime juices.

### Best Inference About Acidity:
From this data, we can infer that:
- Lower pH values correspond to higher acidity (sour tastes).
- Higher pH values correspond to lower acidity (sweeter tastes).

Therefore, based on the student's taste test and the provided pH values, the best inference is:

Lemon and lime juices, having a pH of 2.5, are the most acidic. Orange juice, with a pH of 3.5, is the least acidic among the juices tested.

This explains why lemon and lime taste the sourest and orange tastes the sweetest. The grapefruit juice, with a pH of 3.0, falls in between these in terms of acidity.