At which temperature is NaCl more soluble in water, 0°C or 90°C?

0°C

90°C

http://www.kentchemistry.com/links/Kinetics/SolubilityCurves.htm

In order to determine at which temperature sodium chloride (NaCl) is more soluble in water, we can look at the solubility trends of NaCl with temperature. Generally, as temperature increases, the solubility of most solid solutes in water also increases.

To get more specific information, we can refer to a solubility chart or table for NaCl. These charts provide information about the maximum amount of solute (in this case, NaCl) that can dissolve in a given amount of solvent (water) at different temperatures.

By looking at a NaCl solubility chart or table, we can compare the solubility of NaCl at 0°C and 90°C. The chart will typically provide the solubility in grams of NaCl that can dissolve in 100 grams of water (or in another standardized quantity of water) at each temperature.

Based on the trend mentioned earlier, we would expect that NaCl is more soluble in water at 90°C compared to 0°C. Solubility charts will confirm this by showing a higher solubility value for NaCl at 90°C.

Therefore, the answer is that NaCl is more soluble in water at 90°C compared to 0°C.