62.9k views
4 votes
(1) Does the solubility of borax in water increase or decrease as temperature increases? What experimental evidence supports your answer?

(2) Is the dissolution of borax in water an exothermic or endothermic process? What experimental evidence supports your answer?
(3) Is the dissolution of borax in water a temperature dependent reaction or is it spontaneous at all temperatures at which water is liquid? Briefly explain.

1 Answer

3 votes

Final answer:

The solubility of borax in water increases as temperature increases. The dissolution of borax in water is an endothermic process. The dissolution of borax in water is a temperature dependent reaction.

Step-by-step explanation:

The solubility of borax in water increases as temperature increases. This can be supported by experimental evidence shown in solubility curves, which indicate a general trend of increasing solubility with temperature for many solids in water (as shown in Figure 11.16). However, there may be exceptions to this trend.

The dissolution of borax in water is an endothermic process. This is supported by experimental evidence that shows the solubility of borax increases with temperature, indicating the absorption of heat during the dissolution process. The enthalpy change of solvation (∆Hsoln) of borax is positive, indicating that heat is being absorbed from the surroundings during dissolution.

The dissolution of borax in water is a temperature dependent reaction. The solubility of a compound is generally determined by small differences between large numbers, and these differences can be influenced by temperature. Therefore, the solubility of borax in water increases with temperature, but it may not be spontaneous at all temperatures at which water is liquid.

User Suuuehgi
by
8.4k points