Explanation:
Membrane is a barrier that separates two phases and that totally or partially restricts the transport of one or more chemical species present in the phases. The membrane separation method is based on the use of chemical potential and/or electrical potential gradient as the driving force for the separation. The membrane separation unit operation is based on the use of chemical potential and/or electrical potential gradient as the driving force for the separation.
Given that chemical potential is a function of pressure, temperature and concentration, and that membrane separation processes are generally operated at a constant temperature, both concentration gradients and pressure gradients can act as driving forces capable of promoting the transport of a given species across the membrane.
Examples of processes where the driving force is the pressure gradient are: Microfiltration, Nanofiltration, and Reverse Osmosis. Processes where the driving force are the concentration gradient: gas permeation, dialysis. Processes whose driving force is the electric potential gradient: electrodialysis.
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Answer;
Fractional distillation
Explanation;
-Fractional distillation is one of the method that is used to separate mixtures. It is used for the separation of miscible liquids, for example water and alcohol.
-Fractional distillation is a distillation method that is used to separate liquids that dissolve in each other. It involves separating the components of a mixture by repeated distillations and condensations.
-The components in the mixture being separated by this method normally have different but close boiling points. For example a mixture of alcohol and water, they have different but close boiling points, thus during distillation alcohol condenses out as the first fraction followed by water.
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Answer:</h3>
Na₂S(s) → 2Na⁺(aq) + S²⁻(aq)
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Explanation:</h3>
We need to know:
<h3>What are decomposition reactions?</h3>
- Decomposition reactions are type of reactions in which a compound is broken down into two or more products.
- When a soluble substance or a compound is dissolved in water it forms an aqueous solution.
- When this happens the soluble compound such as ionic compounds ionizes to form ions.
- This is an example of decomposition reaction, since the ionic compound decomposes it ions making it.
- For example, sodium sulfide is an ionic compound that ionizes in water to form sodium and sulfide ions.
Na₂S(s) → 2Na⁺(aq) + S²⁻(aq)
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