What is the purpose of adding alum and lime to water during the process of water treatment
a. to cause particles in the water to clump together so that they can be removed
b. to increase the turbidity of water and raise its dissolved oxygen content
c. to kill unwanted bacteria in the water to prevent illness in humans
d. to lower the ph of the water to make it suitable for people to drink

A

Explanation:

Addition of Alum and lime helps clump particles for easy filtering process and seiving.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.