An inert non volatile solute depresses the freezing point of the solvent. Which

Question

An inert non volatile solute depresses the freezing point of the solvent. Which best describes the physical reason for this? the solvent has a strong affinity for the solute the solvent is repelled by the solute the solute just gets in the way of solvent crystallization the solute helps the solvent crystallize Assuming ideal gas behavior for simples of oxygen and hydrogen gas at STP, the average kinetic energy of the oxygen molecules is___the hydrogen molecules. 16 times as large as 4 times as large as equal to 1/4 times as large as 1/16 times as large as According to the collision theory of gas phase rate constants, which reaction will have the larger rate constant under identical conditions? (Given: identical collision cross sections and activation energy. D = deuterium atom) (I) H + HD rightarrow H_2 + D; (2) D + HD rightarrow D_2 + H a) reaction (I) b) reaction (2) c) same k

Explanation / Answer

1. a. solvent has strong affinity for solute

solvent and solute are mixing to form a homogeneous mixture.

2. KE = 3/2nRT

KE = 3/2W/MRT

KEH2/KEO2 = MO2/MH2

                    = 32/2 =16

Average kinetic energy of oxygen is 16 times larger than hydrogen.

3.C same K

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