Which of the following metal chlordie will give chromyl chloride test ?

Options

A. NaCl
B. KCl
C. AgCl
D. `SbCl_(3)`

Answer

To determine which metal chloride will give a chromyl chloride test, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Chromyl Chloride Test**: The chromyl chloride test is a qualitative analysis method used to detect the presence of chloride ions in a sample. It involves the reaction of a soluble chloride with potassium dichromate and concentrated sulfuric acid.

2. **Identify the Reaction Components**: The reaction that produces chromyl chloride (CrO2Cl2) involves heating potassium dichromate (K2Cr2O7) with concentrated sulfuric acid (H2SO4) in the presence of a soluble chloride salt.

3. **Write the Reaction Equation**: The general reaction can be represented as:
\[ K2Cr2O7 + H2SO4 + NaCl \rightarrow CrO2Cl2 + NaHSO4 + K2SO4 \]
In this reaction, the presence of NaCl (sodium chloride) leads to the formation of chromyl chloride, which is characterized by its orange-red vapors.

4. **Analyze the Given Options**: The question provides several metal chlorides as options. We need to identify which one is soluble and can participate in the reaction to produce chromyl chloride.

5. **Identify the Correct Answer**: Among the options, NaCl is a soluble chloride that will react with potassium dichromate and concentrated sulfuric acid to produce chromyl chloride. Other metal chlorides may not be soluble or may not produce chromyl chloride upon reaction.

6. **Conclusion**: The correct metal chloride that gives the chromyl chloride test is **NaCl**.