When concentrated `H_(2)SO_(4)` spills on a surface , it should be immediately cleaned

Options

A. With a piece of cloth
B. by adding cold water
C. by adding solid `Na_(2)CO_(3)`
D. by adding solid `BaCl_(2)`

Explanation

**Step-by-Step Solution:**

1. **Understanding the Nature of Concentrated H₂SO₄:**
- Concentrated sulfuric acid (H₂SO₄) is a highly corrosive and strong dehydrating agent. It can cause severe damage to surfaces and materials upon contact.

2. **Identifying the Risks:**
- When spilled, concentrated H₂SO₄ can react with water present in the environment, leading to exothermic reactions that can cause splattering and further damage.
- It can also react with organic materials, leading to charring or combustion.

3. **Immediate Action Required:**
- It is crucial to clean up the spill immediately to prevent any further damage to the surface and to avoid any potential hazards.

4. **Cleaning Procedure:**
- First, ensure that you are wearing appropriate personal protective equipment (PPE), such as gloves and goggles.
- Use an absorbent material (like sand or kitty litter) to cover the spill, which will help to neutralize the acid and absorb it.
- Carefully collect the absorbed material and place it in a suitable waste container.
- After the majority of the acid is removed, neutralize any remaining acid with a base, such as sodium bicarbonate (baking soda), before cleaning the surface with water.

5. **Disposal:**
- Dispose of the collected materials and any contaminated cleaning materials according to local hazardous waste disposal regulations.