The coefficient of viscosity of gas :
(A) increases with temperature
(B) decreases with temperature
(C) is independent of temperature
(D) increases with pressure
Answers
Answer:
a. The former effect causes a decrease in the shear stress while the latter causes it to increase. The result is that liquids show a reduction in viscosity with increasing temperature. With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same.
b. A decrease in the temperature of a system favors the direction of the reaction that releases heat, the exothermic direction. ... Therefore, an increase in temperature of the system will favor the forward reaction. Conversely, a decrease in temperature will favor the reverse reaction.
c. Molality= mass of the solvent in kg
number of moles of the solute
Both, the number of moles of solute and the mass of the solvent are independent of the temperature of the solution.
Hence, Molality is independent of temperature.
Thus, the assertion is correct.
The volume of the solution depends on the temperature.