What happens as you decrease the temperature of a solution?
the number of solute particles increases.
the number of solute particles decreases.
the rate of dissolution increases.
the rate of dissolution decreases.
the temperature has no effect on the rate of dissolution.

Option (a) is the correct answer.

Explanation:

If the temperature of a solution is increased then there will be more collision between the particles which results in more energy.

Therefore, there will be less number of particles in the solution.

When we decrease the temperature of a solution then the energy of solution molecules will decrease. As a result, the number of solute particles will increase in the solution.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole