Answer:
See the answer below.
Explanation:
<em>If an aqueous solution of two salts contains both Na2CO3 and Na2SO4, the following steps will prove the occurrence of both carbonate and sulphate ions:</em>
1. Add a dilute acid (such as HCl) to the solution. The presence of carbonate ion will result in the release of carbon dioxide gas which will be shown by formation of effervescent bubbles. The gas can be proven to be carbon dioxide by channeling it into a lime water which usually turns milky with the presence of the gas.
2. Add barium chloride to an acidified portion of the aqueous solution. The presence of sulphate ion will be indicated by the formation of white barium sulphate precipitate. Initial acidification is done to disperse off any carbonate ion that might be present in the solution and give a false-positive white precipitate result.
Due to thermodynamics, heat has higher energy particles and colder temperatures have lower energy particles. Heat is always transferred to lower temperatures. Energy can transfer as heat, not cold. For example, when you put ice cubes in room temperature water, the water transfers energy as heat to the ice cubes, making the cubes warmer. The two temperatures come into equilibrium. And if the water is cold, there is an absence of heat.
A particle is a minute fragment or quantity of matter. In the physical sciences, a particle is a small localized object to which can be ascribed several physical or chemical properties such as volume or mass. ... The term is rather general in meaning, and is refined as needed by various scientific fields.
Answer:
electron transfer to occur to form ions.