If you add 50 g of sylvite in 100 ml of water at 60 ° C, the resulting solution will she unsaturated, saturated or supersaturated?

You prepare a solution and you add 50 g of potassium nitrate to 100 ml of water at 50 ° C. What type of solution are you prepared?

Ammonia is a gas. Describe what happens to the solubility of ammonia when the temperature rises from 20 ° C to 80 ° C.

What two substances which have the same solubility at 28 ° C?

Saturated

We much prefer one question per post.

a) and b). Both require a knowledge of the solubility. I suggest you look on the web for that information. I don't have it in any of my references and I don't keep that kind of info in my head.

c). The solubility of most gases decreases with increasing T.

d needs clarification.

To determine whether a solution is unsaturated, saturated, or supersaturated, you need to compare the amount of solute dissolved in the solvent to its maximum solubility at a given temperature.

For the first question:
To find out if the resulting solution is unsaturated, saturated, or supersaturated after adding 50 g of sylvite (potassium chloride) to 100 ml of water at 60 °C, you would need to know the solubility of sylvite at that temperature. By comparing the amount of sylvite added to the solubility at 60 °C, you can determine the status of the solution:
- If the solubility of sylvite at 60 °C is greater than 50 g, then the solution is unsaturated because it can still dissolve more sylvite.
- If the solubility of sylvite at 60 °C is equal to 50 g, then the solution is saturated because it has reached its maximum capacity to dissolve sylvite.
- If the solubility of sylvite at 60 °C is less than 50 g, then the solution is super-saturated because it contains more sylvite than it can theoretically hold at that temperature.

For the second question:
To determine the type of solution prepared by adding 50 g of potassium nitrate to 100 ml of water at 50 °C, you would need to compare the amount of solute added to the solubility at that temperature. By doing so, you can determine whether the solution is:
- Unsaturated if the solubility of potassium nitrate at 50 °C is greater than 50 g.
- Saturated if the solubility of potassium nitrate at 50 °C is equal to 50 g.
- Supersaturated if the solubility of potassium nitrate at 50 °C is less than 50 g.

For the third question:
As the temperature increases from 20 °C to 80 °C, the solubility of ammonia (NH3) gas in water generally increases. This means that the gas becomes more soluble in water at higher temperatures. The reason behind this is that an increase in temperature provides more energy to the particles, allowing them to break their intermolecular forces and dissolve more easily.

For the fourth question:
To find two substances with the same solubility at 28 °C, you would need to refer to a solubility chart or conduct experiments to determine the solubility of different substances at that specific temperature. Since solubility can vary significantly depending on the substance, it is challenging to identify two unrelated substances that have exactly the same solubility at a specific temperature without referring to specific data.