Blue vitriol has

Options

A. Coordinate bond
B. Covalent bond
C. Hydrogen bond
D. All of these

Answer

To solve the question "Blue vitriol has," we need to analyze the composition and bonding in blue vitriol, which is chemically known as copper sulfate pentahydrate (CuSO4·5H2O). Here’s a step-by-step breakdown:

### Step 1: Identify Blue Vitriol
- Blue vitriol is the common name for copper sulfate pentahydrate, represented by the formula CuSO4·5H2O.

### Step 2: Analyze the Structure
- In the structure of copper sulfate pentahydrate, copper (Cu) is the central atom, surrounded by sulfate ions (SO4) and water molecules (H2O).

### Step 3: Determine the Types of Bonds
1. **Coordinate Bonds**:
- Water molecules coordinate with the copper ion. In this case, the oxygen atom of water donates a lone pair of electrons to the copper ion, forming coordinate bonds.

2. **Covalent Bonds**:
- Within the water molecules (H2O), the bond between hydrogen and oxygen is a covalent bond. This is a strong bond formed by the sharing of electrons between the atoms.

3. **Hydrogen Bonds**:
- There are hydrogen bonds formed between the water molecules and the sulfate ion (SO4). The hydrogen atoms of water can interact with the oxygen atoms in the sulfate ion, leading to hydrogen bonding.

### Step 4: Conclusion
- Based on the analysis, blue vitriol (CuSO4·5H2O) contains:
- Coordinate bonds (between water and copper),
- Covalent bonds (within water molecules),
- Hydrogen bonds (between water and sulfate ions).

Thus, the correct answer to the question "Blue vitriol has" is **all of these** (coordinate bond, covalent bond, and hydrogen bond).

### Final Answer:
**Blue vitriol has coordinate bonds, covalent bonds, and hydrogen bonds. Therefore, the correct option is "all of these."**

---