Explanation
Molar mass of methane =16.042 g mol-1
Molar mass of oxygen = 32.00 g mol-1
Therefore if say, 32g of methane and 32 g of oxygen mixed there is 2 moles of methane and 1 mole of oxygen.
Now , form ideal gas equation,
pV = nRT
n = pV / RT
Hence, pressure is directly proportional to the number of moles
Oxygen is 1/3 of total moles and hence it exerts 1/3 of the total pressure.
For Non-ideal solutions showing negative deviations , new interactions are stronger than those in the pure component. Hence, in a mixture of A and B components show negative deviation, when A-B interactions are stronger than A-A and B-B interaction.
Since sodium chloride and glucose have same molarity. But their Van’t Hoff factor will be different.
Van't Hoff factor (i ) = total number of ions obtained after dissociation
C6H12O6(s) ⇒ C6H12O6 (aq) (1 mole of particles) C6H12O6 =1
NaCl(s) ⇒ Na+(aq) + Cl-(aq) (2 moles of particles) NaCl = 2
Hence sodium chloride (NaCl) solution will show higher elevation of boiling
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