A white solid can be purified from lemon juice. This solid tastes sour. When placed into water the solution conducts electricity
2 answers:
Explanation:
When a solution is acidic in nature then it means its pH range is from 1 to 6.9. And, in an acidic solution there are more number of hydrogen () or hydronium (
) ions as compared to hydroxide ions (
).
Some properties of acids are as follows.
- Acids taste sour.
- Acids show a pH value less that 7.
- Acids release hydrogen ion upon dissociation in water of polar solvents.
- Acids turn blue litmus into red.
Now, since the white solid substance isolated from lemon juice shows all the properties of being an acid.
Thus, we can conclude that the original white powder isolated from lemon juice is an acidic substance.
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Ibuprofen is synthesized by reacting ethyl 2-(4-isobutylphenyl)acetate with base, the base abstracts the acidic proton and enolate is formed which on reaction with diethyl carbonate generates diethyl 2-(4-isobutylphenyl)malonate (A). diethyl 2-(4-isobutylphenyl)malonate on treatment with Base again looses the acidic proton and forms enolate. The enolate with treatment with Methyl Iodide yields diethyl 2-(4-isobutylphenyl)-2-methylmalonate (B). diethyl 2-(4-isobutylphenyl)-2-methylmalonate on hydrolysis give Ibuprofen.
Answer:
the first line
Explanation:
A rarefaction is a region in a longitudinal wave where the particles are furthest apart. ... The region where the medium is compressed is known as a compression and the region where the medium is spread out is known as a rarefaction.
use this picture as a reference:
