Which of the following nitrates are water soluble ?

Options

A. `NaNO_(3)`
B. `AgNO_(3)`
C. `Hg(NO_(3))_(2)`
D. `LiNO_(3)`

Answer

To determine which of the given nitrates are water soluble, we can analyze each option based on the general solubility rules for nitrates. Here’s the step-by-step solution:

### Step 1: Understand the solubility of nitrates
All nitrates (NO3-) are generally soluble in water. This is a key rule in solubility that applies to most metal nitrates.

### Step 2: Analyze each option
1. **NaNO3 (Sodium Nitrate)**
- When NaNO3 is dissolved in water, it dissociates into Na+ and NO3- ions.
- Since it is a metal nitrate, it is soluble in water.
- **Conclusion**: NaNO3 is water soluble.

2. **AgNO3 (Silver Nitrate)**
- When AgNO3 is treated with water, it dissociates into Ag+ and NO3- ions.
- Silver nitrate is also a metal nitrate and is known to be soluble in water.
- **Conclusion**: AgNO3 is water soluble.

3. **Hg(NO3)2 (Mercury(II) Nitrate)**
- When Hg(NO3)2 is treated with water, it dissociates into Hg2+ and 2NO3- ions.
- Mercury(II) nitrate is a metal nitrate and is soluble in water.
- **Conclusion**: Hg(NO3)2 is water soluble.

4. **LiNO3 (Lithium Nitrate)**
- When LiNO3 is dissolved in water, it dissociates into Li+ and NO3- ions.
- Lithium nitrate is also a metal nitrate and is soluble in water.
- **Conclusion**: LiNO3 is water soluble.

### Final Conclusion
All four nitrates listed (NaNO3, AgNO3, Hg(NO3)2, and LiNO3) are water soluble.

### Summary of Results
- NaNO3: Water soluble
- AgNO3: Water soluble
- Hg(NO3)2: Water soluble
- LiNO3: Water soluble