Water is present in `[Cr(H_2O)_6]^(3+).3Cl^(-)` in the form of _________.

Answer

To solve the question, we need to determine the form in which water is present in the complex `[Cr(H_2O)_6]^(3+).3Cl^(-)`.

### Step-by-Step Solution:

1. **Identify the Complex**: The complex given is `[Cr(H_2O)_6]^(3+)`, which indicates that chromium is coordinated with six water molecules.

2. **Understand the Role of Water**: In coordination compounds, water can act as a ligand. When water molecules are coordinated to a metal ion, they can be referred to as "water of hydration" or "hydrated water."

3. **Determine the Type of Isomerism**: The question hints at the presence of water in the form of a hydrate isomer. A hydrate isomer is a type of isomer where the number of water molecules as ligands can vary, leading to different structures but the same overall composition.

4. **Conclusion**: In the complex `[Cr(H_2O)_6]^(3+)`, the water is present in the form of **hydrated water** or **water of hydration**. This means that the water molecules are coordinated to the chromium ion as ligands.

### Final Answer:
Water is present in `[Cr(H_2O)_6]^(3+).3Cl^(-)` in the form of **hydrated water**.

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