If the reverse reaction is favoured and it includes a solid as a reactant, the solid concentration is not going to increase as solids and liquids stay constant right?
To determine which solution is most basics given [OH-] / [H30+], you take the -log and you compare it on the pH scale?
a.[H30+] = 10^-2
b.[OH-] = 10^-4
c.[H30+] = 10^-11
d.[OH-] = 10^-13
C. would be the most basic as it gives you the pH of 11. Is this right?
-Also what is a good site for studying hydrolysis of salts deeming them as neutral, acidic or basic?
TIA!
a. Some solid must be present but the concn does not change.
b. yes. a has a pH of 2, b has a pH of 10, c has a pH of 11, and d has a pH of 1 so C is the most basic.
Here are a couple of sites for hydrolysis of salts.
http://www.science.uwaterloo.ca/~cchieh/cact/c123/salts.html
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Regarding the first question, if the reverse reaction is favored and it involves a solid as a reactant, the solid concentration remains constant. This is because the concentration of a solid cannot change unless it dissolves or reacts in some way. Therefore, in this case, the solid concentration is considered constant.
Moving on to the second question, to determine which solution is most basic given the [OH-] / [H3O+] ratio, we use the -log function (also known as the "pH" function) to calculate the pH of each solution. The pH scale is a logarithmic scale that ranges from 0 to 14, with pH 7 being neutral, pH less than 7 being acidic, and pH greater than 7 being basic.
Let's calculate the pH for each of the given options:
a. [H3O+] = 10^-2, so the pH = -log(10^-2) = 2.
b. [OH-] = 10^-4, so the pH = -log(10^-4) = 4.
c. [H3O+] = 10^-11, so the pH = -log(10^-11) = 11.
d. [OH-] = 10^-13, so the pH = -log(10^-13) = 13.
Since option c has the highest pH of 11, it is indeed the most basic solution among the given options.
As for your last question, a good site for studying hydrolysis of salts and determining whether they are neutral, acidic, or basic is Khan Academy. They have comprehensive and interactive lessons on various topics, including acid-base chemistry and hydrolysis. You can find their resources at www.khanacademy.org.