At what temperature do KCL and KNO3 have the same solubility
If a saturated solution of KNO3 at 20.0 C is heated to 80.0 how much more could be dissolved?
If a saturated solution of KCL at 90.0 C is colled to 30.0 C how much of the solid will precipitate?
How much NaCL will dissolve in 350.0 g of water at 70.0C
How much KCL Will dissolve in 50. g of water at 50.0C
What mass of O2 can be dissolved in 2000.0 g of water at 30.0 C
Please help me work these out. I am doing a practice page before my test 2morrow and I need to know how to work them THANKS
You must have information on the solubility at various temperatures. We need that to help you.
Um Alls the sheet gave me is this.. But are you talking about graphs?
A graph would do if but you must read the graph. We need the solubility of KNO3 and KCl but if you have a graph all you need to do is read that first one off the graph. At what T on the graph is the solubility of KCl and KNO3 the same. The solubility curves should intersect at that point. In fact I think all of these can be read from the graph.
Oh okay THANKS SO MUCH!
To answer these questions, we need to understand the solubility of these compounds at different temperatures. Solubility is the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature.
1. At what temperature do KCl and KNO3 have the same solubility?
To determine the temperature at which KCl and KNO3 have the same solubility, you would need to consult a solubility table or graph specifically for these two compounds. The temperature at which their solubilities are equal would be the answer to this question.
2. If a saturated solution of KNO3 at 20.0 °C is heated to 80.0 °C, how much more could be dissolved?
The solubility of KNO3 increases with temperature, so heating the solution would allow more of the compound to dissolve. To determine how much more could be dissolved, you would again need to refer to a solubility table or graph for KNO3. The difference between the solubility at 80.0 °C and the initial solubility at 20.0 °C would give you the answer.
3. If a saturated solution of KCl at 90.0 °C is cooled to 30.0 °C, how much of the solid will precipitate?
The solubility of KCl decreases with temperature, so cooling the saturated solution would cause some of the dissolved KCl to precipitate. To determine how much solid would precipitate, you would need to know the initial concentration of KCl in the saturated solution and compare it to the solubility of KCl at 30.0 °C.
4. How much NaCl will dissolve in 350.0 g of water at 70.0 °C?
To answer this question, you would need to refer to a solubility table or graph for NaCl at 70.0 °C. The solubility value at that temperature would indicate the maximum amount of NaCl that can dissolve in 350.0 g of water.
5. How much KCl will dissolve in 50.0 g of water at 50.0 °C?
Similar to the previous question, you would need to refer to a solubility table or graph for KCl at 50.0 °C. The solubility value at that temperature would indicate the maximum amount of KCl that can dissolve in 50.0 g of water.
6. What mass of O2 can be dissolved in 2000.0 g of water at 30.0 °C?
The solubility of O2 in water is affected by pressure, not just temperature. If the question doesn't mention a specific pressure, it might be challenging to determine the exact mass of O2 that could be dissolved. However, you could consult a solubility table or graph for O2 at 30.0 °C and standard atmospheric pressure (1 atm) to obtain an estimate.
Remember to always consult reliable sources, such as textbooks or reputable online resources, to find accurate solubility data for different compounds at specific temperatures and pressures.