What kind of change occurs when salt dissolves in water? chemical change solution change physical change substance change Descri
2 answers:
Answer: physical change
Explanation:
A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions.
Example: salt dissolves in water, as there is only a change in phase and no new substance is being formed.
A chemical reaction is defined as the reaction in which a change in chemical composition takes place. A new substance is formed in these reactions.
Example: Oxidation of magnesium leads to formation of white magnesium oxide and is a chemical change.
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Since, A alkene yields 4-heptanone only on treatment with ozone and DMS thus, it implies that both the chains on the side of the double-bond are similar the product is 4-heptanone that means the double bond is present between the chains at the 4th carbon. Therefore the structure of compound A is 4,5-dipropyloct-4-ene.
The reaction is as shown in the image.
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