Question

How does the viscosity of a gas change with increase in temperature of the gas?

Answer 1

Answer:

In other words, increasing gas temperature causes the gas molecules to collide more often. This increases the gas viscosity because the transfer of momentum between stationary and moving molecules is what causes gas viscosity. As a liquid is heated, the viscosity decreases ... just the opposite effect as in gases.

Explanation:

When Temperature increases, molecular momentum transfer between the molecules increases as their kinetic energy increases. ... The molecular momentum transfer has significant role in gases than force of cohesion. Thus in net effect, the viscosity of gas increases with increase in temperature.