The effect of temperature on the surface tension of water is that as the temperature increases, the surface tension decreases. This happens because the increased temperature leads to an increase in the kinetic energy of water molecules. As a result, the molecules move more rapidly and the intermolecular forces holding them together at the surface become weaker. Consequently, the surface tension decreases.To measure the effect of temperature on the surface tension of water accurately, you can use the following methods:1. Capillary rise method: In this method, a thin capillary tube is dipped into the water, and the height to which the water rises in the tube is measured. The surface tension can be calculated using the formula: = hgR /2, where is the surface tension, h is the height of the liquid column, is the density of the liquid, g is the acceleration due to gravity, and R is the radius of the capillary tube. This experiment can be performed at different temperatures to observe the effect on surface tension.2. Wilhelmy plate method: This method involves immersing a thin, flat plate usually made of glass or platinum vertically into the water and measuring the force required to detach it from the water surface. The surface tension can be calculated by dividing the measured force by the perimeter of the plate. This experiment can also be performed at different temperatures to study the effect on surface tension.3. Maximum bubble pressure method: In this method, a gas is bubbled through a small orifice submerged in the water, and the pressure of the gas is measured when the maximum size of the bubble is reached just before detachment. The surface tension can be calculated using the formula: = Pd /4, where is the surface tension, P is the pressure of the gas, and d is the diameter of the orifice. This experiment can be conducted at various temperatures to observe the effect on surface tension.4. Drop weight or drop volume method: This method involves measuring the weight or volume of individual droplets of water detaching from the end of a thin tube. The surface tension can be calculated using the formula: = mgR /2, where is the surface tension, m is the mass of the droplet, g is the acceleration due to gravity, and R is the radius of the tube. This experiment can be performed at different temperatures to study the effect on surface tension.By using any of these methods and performing the experiments at different temperatures, you can accurately measure the effect of temperature on the surface tension of water.