Which Of The Following Are Soluble In Water Or NOT Soluble In Water? 1. KOH 2. Ag3PO3 3. RbNO3 4.CH3CH2OH (Ethanol) 5. CH3CH3 (Ethane) Compound 1 [Choose] Compound 2 [Choose] Compound 3 [Choose] Compound 4 Soluble Compound 5 [Choose]
The Correct Answer and Explanation is :
Here are the solubility classifications for each of the compounds listed:
- KOH (Potassium hydroxide): Soluble in Water
- Potassium hydroxide is a strong base and a highly soluble ionic compound. It dissociates completely in water to form K⁺ (potassium) and OH⁻ (hydroxide) ions, which makes it highly soluble in water.
- Ag₃PO₄ (Silver phosphate): Not Soluble in Water
- Silver phosphate is an ionic compound, but it is poorly soluble in water. Most silver salts, except those with nitrate or acetate ions, have low solubility. Silver phosphate, Ag₃PO₄, is one of the compounds that are largely insoluble in water.
- RbNO₃ (Rubidium nitrate): Soluble in Water
- Rubidium nitrate is a salt formed by rubidium (Rb⁺) and nitrate (NO₃⁻) ions. Nitrate salts are typically very soluble in water, and rubidium nitrate follows this rule, meaning it is soluble in water.
- CH₃CH₂OH (Ethanol): Soluble in Water
- Ethanol is an alcohol that has both a hydrophilic (water-attracting) -OH group and a hydrophobic (water-repelling) alkyl chain (CH₂CH₃). Despite the hydrophobic part, the -OH group allows ethanol to form hydrogen bonds with water molecules, making ethanol soluble in water.
- CH₃CH₃ (Ethane): Not Soluble in Water
- Ethane is a nonpolar molecule, and water is a polar solvent. Because of the nonpolar nature of ethane, it cannot form favorable interactions with the polar water molecules, making it insoluble in water.
Summary:
- Compound 1 (KOH): Soluble
- Compound 2 (Ag₃PO₄): Not Soluble
- Compound 3 (RbNO₃): Soluble
- Compound 4 (Ethanol): Soluble
- Compound 5 (Ethane): Not Soluble
Now, I will generate an image summarizing these results in a simple table format.
Here is the image summarizing the solubility of the compounds in water. You can see the solubility information for each compound listed clearly in the table. Let me know if you need further clarification!