Multiple Choice
If NO₂ and NH₃ are allowed to effuse through a porous membrane under identical conditions, the rate of effusion for NH₃ will be how many times that of NO₂?
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7. Gases
Effusion
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Which of the following solutes would diffuse the fastest in water at room temperature?
A
Glucose (C6H12O6)
B
Hydrogen chloride (HCl)
C
Sucrose (C12H22O11)
D
Sodium chloride (NaCl)
Verified step by step guidance1
Understand that diffusion rate in water is influenced by the molar mass of the solute; lighter molecules generally diffuse faster.
Calculate the molar mass of each solute: Glucose (C6H12O6), Sucrose (C12H22O11), Sodium chloride (NaCl), and Hydrogen chloride (HCl).
For Glucose (C6H12O6), add the atomic masses: 6(C) + 12(H) + 6(O).
For Sucrose (C12H22O11), add the atomic masses: 12(C) + 22(H) + 11(O).
For Sodium chloride (NaCl), add the atomic masses: Na + Cl. For Hydrogen chloride (HCl), add the atomic masses: H + Cl.
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