determine the solubility in g/100 g water of A. KNO3 at 90DEGREE CELCIUS

B. KBr at 80 degrees celcius
C. Kl at 0degree celcius
D. KCl at 40 DEGREE CELCIUS

You must have tables or graphs from which to obtain these data. I certainly don't have these things memorized. If you don't have this information in your text/notes, Google them and see if you can't find the numbers that way.

To determine the solubility of different compounds in water at specific temperatures, we can refer to solubility tables or use experimentally determined data. Solubility is usually expressed in terms of grams of solute per 100 grams of solvent.

A. To determine the solubility of KNO3 at 90 degrees Celsius, we can refer to a solubility table or use experimental data. According to the CRC Handbook of Chemistry and Physics, the solubility of KNO3 in water at 90 degrees Celsius is 187 grams per 100 grams of water.

B. For KBr at 80 degrees Celsius, we can also refer to a solubility table or use experimental data. The solubility of KBr in water at 80 degrees Celsius is approximately 110 grams per 100 grams of water.

C. In the case of Kl at 0 degrees Celsius, we can use the solubility table or experimental data as well. At 0 degrees Celsius, the solubility of Kl in water is approximately 0.62 grams per 100 grams of water.

D. Lastly, if we want to determine the solubility of KCl at 40 degrees Celsius, we can consult the solubility table or use experimental data. The solubility of KCl in water at 40 degrees Celsius is approximately 56 grams per 100 grams of water.

By referring to solubility tables or using experimental data, we can obtain the solubility of different compounds in water at specific temperatures.