Read the given passage and answer the following
questions.
Sanjana while preparing cake used baking soda in small amounts. It helps to make the cake soft land spongy. An aqueous solution of baking soda also turns red litmus blue. It is also used in soda acid extinguisher.
The pH of baking soda solution is :

Options

A. more than 7
B. less than 7
C. equal to 7
D. less than 7 but more than 3.

Explanation

To determine the pH of a baking soda solution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Nature of Baking Soda**:
- Baking soda is chemically known as sodium bicarbonate (NaHCO3). It is classified as a weak base.

2. **Understand the Behavior of Baking Soda in Water**:
- When baking soda is dissolved in water, it partially ionizes to form bicarbonate ions (HCO3-) and sodium ions (Na+). This partial ionization is characteristic of weak bases.

3. **Determine the pH Range for Baking Soda**:
- The pH scale ranges from 0 to 14. A pH of 7 is considered neutral, below 7 is acidic, and above 7 is basic.
- Since baking soda is a weak base, its aqueous solution will have a pH greater than 7.

4. **Conclude the pH Value**:
- Therefore, the pH of a baking soda solution is greater than 7. This indicates that it is basic in nature.

### Final Answer:
The pH of baking soda solution is greater than 7.

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