At 20 ° C the Henry's Law Constant for N₂O

question 9

Multiple Choice

At 20 ° C the Henry's law constant for N₂O is 2.72×10 ^{- 2} molal/atm. How many grams of N₂O (molar mass = 44.0 g/mol) will dissolve in 180 g of water (molar mass = 18.0 g/mol) at 20 ° C if the pressure of N₂O above the solution is 1.5 atm?

• A) 0.13 g
• B) 0.022 g
• C) 0.32 g
• D) 1.8×10 ^{- 2} g
• E) 4.1×10 ^{- 2} g

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