Why viscosity of gases increases with temperature

Toggle Menu. Current Topic: Why does the viscosity of a gas increase with temperature. Jcrockey: As a gas is heated, the movement of gas molecules increases and the probability that one gas molecule will collide with another gas molecule increases.

In other words, increasing gas temperature causes the gas molecules to collide more often. Simultaneously Increase in temperature of the liquid increase the molecular interchanging between fluid layers similar to those developed in a gas, interlayer interactions increases viscosity. However, the net result is that the viscosity of a liquid decreases with an increase in temperature.

This can be observed, for example, cooking oil shows more fluidity after being heated. Karthik Karthik 2 2 gold badges 4 4 silver badges 12 12 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Ari J. Ari 1, 6 6 silver badges 15 15 bronze badges. Kinformationist 1 1 gold badge 5 5 silver badges 21 21 bronze badges.

Bdrs Bdrs 3 3 silver badges 12 12 bronze badges. Sign up or log in Sign up using Google. The layer of water molecules and layers of oil molecule balance force between the two interface reducing the surface tension at the water surface. Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Cover Letter Why does viscosity of gas increase with temperature? Cover Letter.

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How does temperature affect viscosity and flow rate?