Let's go through the problem step by step:
### Part (a): Suggest the most appropriate method that can be used to separate the two liquids
#### Analysis:
- We are given two liquids, W and K, with different densities. Liquid W has a density of 0.64 g/cm³, and Liquid K has a density of 1.5 g/cm³.
- When two immiscible liquids (liquids that do not mix) with different densities are combined, they will naturally separate into two layers due to their density differences, with the less dense liquid on top and the more dense liquid on the bottom.
#### Solution:
- The most appropriate method to separate these two liquids, considering their difference in densities, is using a separating funnel (also known as a separatory funnel).
- This device allows the liquids to separate into layers, where the bottom denser liquid can be drained off first through a tap, allowing for effective separation.
### Part (b): State the principle employed during the separation of liquid W and K
#### Analysis:
- The principle that governs the separation of immiscible liquids using a separating funnel is based on the difference in density.
- The separating funnel allows the denser liquid to settle at the bottom, and the less dense liquid to rise to the top.
#### Solution:
- The principle employed during the separation of liquids W (density 0.64 g/cm³) and K (density 1.5 g/cm³) is the difference in density.
- In the separating funnel, the liquid with higher density (K in this case) will settle at the bottom, and the liquid with lower density (W in this case) will remain on the top.
- When the tap at the bottom of the funnel is opened, the denser liquid (K) can be allowed to flow out first, effectively separating the two liquids.
### Final Answer
1. a) The most appropriate method that can be used to separate the two liquids is a separating funnel.
2. b) The principle employed during the separation of liquid W and K is the difference in density.
