Answer:
The correct answer is – wash the affected area with soap, water, and sodium bicarbonate (baking soda)
Explanation:
Soap emulsifies and dissolves the alkyl group of alkylcatechol which is hydrophobic, as it is known that pKa of alkylcatechol is around 8, its -OH group ionizes in a slightly alkaline solution of baking soda (bi carbonate) and makes the compound much more water soluble and relaxes the effect of poison ivy.
Further explanation:
Poison ivy and poison oak are plants that cause itchy rash when they come in contact with an individual. A substance are found in these plants known as urushiol, that is the reason for the rashes.
These substances contains mainly catechols. Catechols of poison ivy contains C17 where as poison oak contains C15 side chains.
Longer the side chains present in the catechols, stronger the reaction will be and tougher to remove or wash them. The alkyl group is hydrophobic so it is not easy to wash it off with water or soap all alone. Bicarbonate solution helps in removing it.
It is believed that characteristic itchy rashes are due to structural properties of catechol than properties of exposed skins. Thus it is needed to dissolve or break the side chain of catechols.
Soap water helps in emulsifying the alkyl catechols and make it dissolve as it is hydrophobic in nature. For washing it more easily, solution of baking soda can be used as it can ionize the -OH group of the catechols which makes it more water soluble.
Learn more:
1. Poison ivy brainly.com/question/601145 ( answer by Exvited )
2. use of urushiol brainly.com/question/1219325 ( answer by JcAlmighty)
Keywords
:
Poison ivy, poison oak, urushiol, catechols, bicarbonate, water, soap, rashes, itchy, alkylcatechols.