Which of the following statements is true? A. Isotopes of the same element have the same number of protons and neutrons. B. Isot
1 answer:
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Answer:
65.18% is the percent yield for this reaction.
Explanation:
Moles of salicyclic acid =
According to reaction 1 mole of salicyclic acid gives 1 mole of aspirin .
Then 0.01449 mole of salicylic acid will give :
of asprin
Mass of 0.01449 moles of aspirin :
= 0.01449 mol × 180 g/mol = 2.6082 g
Theoretical yield of aspirin = 2.6082 g
Experimental yield of aspirin = 1.7 g
The percent yield for this reaction:
65.18% is the percent yield for this reaction.
The question is incomplete. Here is hte complete question.
The components of poison ivy and poison oak that produce the characteristic itchy rash are cathecols substituted with long-chain alkyl groups. The image is attached.
If you were exposed to poison ivy, which of the treatments below would you apply to the affected area? Justify your choice.
(a) Wash the area with cold water.
(b) Wash the area with dilute vinegar or lemon juice.
(c) Wash the area with sopa and water.
(d) Wash the area with soap, water and baking soda (sodium bicarbonate)
Answer: (d) Wash the area with soap, water and baking soda.
Explanation: Alkyl is hydrophobic, which means it doesn't "mix" with water. To make it more soluble in water, soap helps to dissolve the chemical compound. As shown in the image, alkylcathecol is mildly alkaline. Baking soda is a salt that also helps dissolve it by ionizing with the -OH group, which makes it more soluble.
Although lemon juice and vinegar are acids, they are weak acids and so, won't have a strong effect on the alkylcathecol.
As said before, alkyl is hydrophobic, so plain water won't affect in any way the cathecol.
