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What is the effect of pH on surface tension?
Surface tension typically decreases as the pH of a solution becomes more acidic or basic. This is due to changes in the concentration of ions at the liquid-air interface, which affects the attractive forces between molecules. In general, a change in pH can disrupt the hydrogen bonding between water molecules, leading to a decrease in surface tension.
What role does high surface tension play in indicating the strength of intermolecular forces?
High surface tension is indicative of strong intermolecular forces. This is because surface tension is a measure of the cohesive forces between molecules at the surface of a liquid. The stronger the intermolecular forces, the higher the surface tension, as the molecules are more tightly held together.
Which will have the higher surface tension C6H6 or C3H7OH?
C3H7OH (isopropanol) will have higher surface tension than C6H6 (benzene). This is because isopropanol is a polar molecule due to the presence of the -OH group, which allows for stronger intermolecular forces compared to the nonpolar benzene molecules.
Does cooking oil have more surface tension than water?
No, water has a higher surface tension than cooking oil. Surface tension is the result of intermolecular forces at the surface of a liquid that cause it to minimize its surface area. Water molecules have stronger hydrogen bonding than oil molecules, leading to higher surface tension in water.
Why kerosene has more surface tension than water?
Kerosene has more surface tension than water because the molecules in kerosene are non-polar, which allows them to pack closely together at the surface. This stronger intermolecular attraction results in a higher surface tension compared to water, which has polar molecules that are more prone to forming hydrogen bonds, reducing surface tension.
