Why are most organic compounds nonconducting and insoluble in water?
2 answers:
Explanation:
It is known that like dissolves like which means that polar substances are able to dissolve only in polar solvents.
Whereas non-polar substances are able to dissolve only in non-polar solvents.
As all organic compounds are non-polar in nature so, they are only soluble in non-polar solvents.
On the other hand, water is a polar solvent and its dissolves substances like NaCl, etc that are also polar in nature.
Also, for a solution to conduct electricity it is necessary that there must be flow of ions from one place to another. But a non-polar or organic substance do not dissociate into ions when dissolved in water.
Hence, it is unable to conduct electricity.
Thus, we can conclude that most organic compounds are non-conducting and insoluble in water because:
- Most organic compounds don't dissolve in water because they are nonpolar.
- They don't conduct electricity because they are covalent, not ionic.
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The pH of the solution in which one normal adult dose aspirin is dissolved is : 2.7
Given data :
mass of aspirin = 640 mg = 0.640 g
volume of water = 10 ounces = 0.295735 L
molar mass of aspirin = 180.16 g/mol
moles of aspirin = mass / molar mass = 0.00355 mol
<h3>Determine the pH of the solution </h3>First step : <u>calculate the concentration of aspirin</u>
= moles of Aspirin / volume of water
= 0.00355 / 0.295735
= 0.012 M
Given that pKa of Aspirin = 3.5
pKa = -logKa
therefore ; Ka = =
From the Ice table
=
=
given that the value of Ka is small we will ignore -x
x² =
x =
Therefore
[ H⁺ ] =
given that
pH = - Log [ H⁺ ]
= - ( -3 + log 1.948 )
= 2.71 ≈ 2.7
Hence we can conclude that The pH of the solution in which one normal adult dose aspirin is dissolved is : 2.7
Learn more about Aspirin : brainly.com/question/2070753