# Kimokildn1627

## Hatice_Nur_Bayram said

Based on the image provided, it looks like Hatice_Nur_Bayram asked about the solubility product (Ksp) and the related calculations of certain salts in different conditions. Let’s analyze them:

1. 7th Question:

• Given: Solubility product of CaCO₃ at a certain temperature ( K_{sp} = 10^{-8} )
• If 10^-4 M CaCO₃ solution is needed to reach saturation in 10 liters of water, more CaCO₃ needs to be dissolved until the concentration reaches ( 4 \times 10^{-3} ) M.
• Calculation involves understanding the relationship: ( K_{sp} = [Ca^{2+}][CO_3^{2-}] ) to determine the required additional CaCO₃ amount.
2. 8th Question:

• Solubility rules for different salts and the changes in their concentrations during the dissolution process are asked.
• Candidates need to understand the resulting saturation equilibrium and how different processes affect it.
3. 9th Question:

• Comparing solubility of salts XY and X₃Z in a specific medium.
• Students should determine if the ion product of ( X^{3-} ) in different solutions is equal under specific conditions.
4. 10th Question:

• Calculation of the volume of a saturated solution containing a given amount of dissolved PbCl₂.
• Takes into account the solubility product ( K_{sp} = 4 \times 10^{-6} ) and conversions between mass, moles, and volume.

For those seeking to solve similar questions:

1. Understand key concepts:

• Solubility product constants (Ksp)
• Concentration conversions
• Equilibrium expressions for saturation
2. Step-by-step calculation:

• For solubility problems, ensure that each ion concentration is accounted for, and Ksp expression is set correctly.
• For volume or mass question involving solubility, convert between units as necessary.
3. Verify units:

• Always check that all units are consistent, especially when switching between mass, volume, and concentration.

This structured approach helps in ensuring accurate and thorough solutions to similar chemical equilibrium and solubility problems.