Consider a solution that is saturated with a gas and a solid at room temperature. Which of the following will occur when the solution is heated by 50°C?

• A. Gas bubbles out of the solution.
• B. Gas bubbles out of the solution and solid dissolves.
• C. Solid dissolves.
• D. Gas bubbles out of the solution and solid precipitates.

Answer: (B)

Verified step by step guidance

1. Understand the concept of solubility: Solubility of gases in liquids typically decreases with an increase in temperature, while the solubility of most solids in liquids increases with temperature.
2. Consider the effect of heating on the gas: When the solution is heated, the kinetic energy of the gas molecules increases, causing them to escape from the solution, leading to gas bubbling out.
3. Consider the effect of heating on the solid: As the temperature increases, the solubility of the solid generally increases, allowing more of the solid to dissolve in the solution.
4. Analyze the given options: Based on the effects of temperature on solubility, the correct outcome when the solution is heated is that the gas will bubble out and the solid will dissolve.
5. Conclude with the correct answer: The correct answer is 'Gas bubbles out of the solution and solid dissolves,' as this aligns with the typical behavior of gases and solids in response to increased temperature.