Give me answer this questions
Q.1 Explain the effects of temperature on surface tensions.
Q.2 Explain the effects of impurities on surface tension.
Q.3 How will you measure surface tension?
Answers
Answered by
1
Answer:
(1) In general, surface tension decreases when temperature increases because cohesive forces decrease with an increase of molecular thermal activity
(2) The presence of impurities either on the surface or dissolved in it, affect surface tension of the liquid. Highly soluble substances increase the surface tension of water, whereas sparingly soluble substances reduce the surface tension of water. The surface tension of a liquid decreases with increase in temperature.
(3) Surface scientists commonly use an optical goniometer/tensiometer to measure the surface tension and interfacial tension of a liquid using the pendant or sessile drop methods
Explanation:
may it helps you
Similar questions