Which of the following generally occurs as temperature increases?

Question

BlackTom AI · Accepted Answer

First, recall the general trend in solubility for solid solutes in liquids (like water) as temperature changes: for most solids, solubility increases with increasing temperature due to endothermic dissolution or entropy effects that favor dissolution at higher temperatures.
Option 1: 'Solubility of a solid solute decreases.' This is not the typical trend; while some solids are less soluble at higher temperatures, the common case is the opposite, so this statement is generally incorrect.
Option 2: 'Solubility of a solid solute increases.' This aligns with the common behavior that heating water often allows more solid to dissolve, reflecting increased solubility with temperature in many systems.
Option 3: 'Solubility of a solid solute remains the same.' In reality, even if some solids show little change, the general rule is that solubility tends to change with temperature; stating it remains the same is inaccurate for a broad majority of solids.
Option 4: 'Molarity of a solid solute doubles.' This is a misguided and vague claim: solubility changes with temperature, not a fixed multiplicative rule like doubling the molarity; solubility is not described as simply doubling when temperature increases, and molarity is a concentration measure that depends on how much solute dissolves, not a direct intrinsic property that deterministically doubles with temperature.
In summary, the statement that matches the common trend is that the solubility of a solid solute increases with temperature, while the other options either misstate the typical trend or mischaracterize how solubility and concentration behave with temperature.

Which of the following generally occurs as temperature increases?

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