JAMB - Chemistry (1998 - No. 17)
Soap lather is an example of a colloid in which a?
liquid is dispersed in gas
solid is dispersed in liquid
gas is dispersed in liquid
liquid is despersed in liquid
הֶסבֵּר
When soap forms lather, a gas (primarily air) is dispersed within the liquid (soap and water mixture). This creates a frothy, bubbly substance, a foam. The gas is trapped within the bubbles formed by the soap molecules binding to water.