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The Henry's law constant (K_H) values for N₂ at 293 K and 303 K are 76.48 and 88.84 kbar respectively. This shows that:
AThe solubility of N₂ in water decreases with temperature
BThe solubility of N₂ in water increases with temperature
CN₂ does not obey Henry's law
DK_H is independent of temperature
Answer & Solution
Correct answer: A. The solubility of N₂ in water decreases with temperature
Since p = K_H × x → for the same partial pressure, **larger K_H means smaller x** → **lower solubility**. K_H rising with T → solubility falls with T. This is why warmer waters hold less dissolved oxygen.
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