Answer :
To solve the question, let's analyze the table of values that relate temperature and concentration:
1. Examine the data provided:
- At 18.5°C, the concentration is 1.43 g/mL.
- At 37.9°C, the concentration is 0.81 g/mL.
- At 59.3°C, the concentration is 0.30 g/mL.
- At 80.1°C, the concentration is 0.21 g/mL.
2. Observe the pattern:
- As the temperature increases, the concentration of the solute decreases. This means that less of the solute is dissolved in the solvent as it gets warmer.
3. Determine the nature of the solute:
- For solids, generally, solubility increases with an increase in temperature.
- For gases, solubility typically decreases with an increase in temperature.
4. Conclusion:
- Since the concentration decreases with an increase in temperature, it indicates a characteristic behavior of a gas. Therefore, the solute is likely a gas because the amount dissolved decreases as temperature increases.
The correct statement from the options provided is: "The solute is a GAS because the amount dissolved DECREASES as temperature increases."
1. Examine the data provided:
- At 18.5°C, the concentration is 1.43 g/mL.
- At 37.9°C, the concentration is 0.81 g/mL.
- At 59.3°C, the concentration is 0.30 g/mL.
- At 80.1°C, the concentration is 0.21 g/mL.
2. Observe the pattern:
- As the temperature increases, the concentration of the solute decreases. This means that less of the solute is dissolved in the solvent as it gets warmer.
3. Determine the nature of the solute:
- For solids, generally, solubility increases with an increase in temperature.
- For gases, solubility typically decreases with an increase in temperature.
4. Conclusion:
- Since the concentration decreases with an increase in temperature, it indicates a characteristic behavior of a gas. Therefore, the solute is likely a gas because the amount dissolved decreases as temperature increases.
The correct statement from the options provided is: "The solute is a GAS because the amount dissolved DECREASES as temperature increases."