Question:
NaCl dissolves spontaneously in water. Based upon the following reaction,
NaCl(s) $\rightarrow$ Na$^{+}$(g) + Cl$^{-}$(g)
NaCl dissolves spontaneously in water. Based upon the following reaction,
NaCl(s) $\rightarrow$ Na$^{+}$(g) + Cl$^{-}$(g)
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When a substance dissolves spontaneously, the heat of hydration is typically exothermic.
Updated On: Mar 30, 2025
- negative with a magnitude less than 786
- negative with a magnitude greater than 786
- positive with a magnitude greater than 786
- nothing can be determined about the heat of hydration without more information
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The Correct Option is B
Solution and Explanation
Since NaCl dissolves spontaneously in water, the heat of hydration must be negative, indicating an exothermic process. The magnitude of the heat of hydration is greater than 786.
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