Bleaching power is a mixed salt of hydrochloric acid and hypochlorious acid. It has the formula, `CaOCI_(2).H_(2)O`. It is manuafactured by the action of chlorine on dry slaked lime at `40^(@)C`. There is also a view that bleaching power is a mixture `[Ca(OCI)_(2)+CaCI_(2).Ca(OH)_(2).H_(2)O]`. The amount of chlorine obtained form a sample of bleching power by the treatement with excess of dilute acids or `CO_(2)` is called a available chlorine. A good sample of bleaching power constains `35-38%` of available chlorine. On long standing, it undergoes auto-oxidation and the amount of acvailable chlorine decreases. The estimation of available chlorine is done volumetrically by (a) iodometric method or by (b) aresenite method. In textile industry, the cotton cloth is mainly bleached with the help of bleaching power.
The chemical name of bleaching powder is

Options

A. Calcium hypochlorite
B. Calcium chlorohypochorite
C. Calcium chlorate
D. calcium perchlorate

Answer

To find the chemical name of bleaching powder, we can follow these steps:

### Step 1: Identify the Components of Bleaching Powder
Bleaching powder is represented by the formula \( \text{Ca(OCl)}_2 \cdot \text{H}_2\text{O} \). It consists of calcium ions (Ca²⁺) and hypochlorite ions (OCl⁻).

### Step 2: Determine the Cation and Anion
In the formula:
- The cation is \( \text{Ca}^{2+} \) (calcium ion).
- The anion is \( \text{OCl}^{-} \) (hypochlorite ion).

### Step 3: Name the Cation and Anion
- The cation \( \text{Ca}^{2+} \) is simply called "calcium."
- The anion \( \text{OCl}^{-} \) is known as "hypochlorite."

### Step 4: Combine the Names
When naming a compound, the cation name is placed first followed by the anion name. Therefore, the name of the compound is "calcium hypochlorite."

### Conclusion
The chemical name of bleaching powder is **calcium hypochlorite**.

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