What is the Highest pH Salt Solution in a 1 Molar Solution?

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In summary, the question is asking for the salt with the highest pH in a 1 molar solution. The options are NaNO3, Na2CO3, NH4CL, NaHSO4, and Na2SO4. The student suggests that it may be NaNO3 because it produces a strong acid, which would lead to more OH in the solution. However, this is incorrect as a strong acid would have a low pH. The correct answer is the salt with the strongest conjugate acid ion, which can be found by comparing the relative strength of all conjugate acid ions. A resource is provided for further understanding of this concept.
  • #1
Schmidty369
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Q: A 1 molar solution of which of the the following salts has the highest pH?
A. NaNO3
B. Na2CO3
C. NH4CL
D. NaHSO4
E. Na2SO4

I think its a because NO3 would make a strong acid making more OH but I am coufused totaly on how to find pH of salts
 
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  • #2
Highest pH, or lowest pH? Do you mean which is the strongest acid, or which is the weakest?
 
  • #3
highest pH
 
  • #4
Schmidty369 said:
Q: A 1 molar solution of which of the the following salts has the highest pH?
A. NaNO3
B. Na2CO3
C. NH4CL
D. NaHSO4
E. Na2SO4

I think its a because NO3 would make a strong acid making more OH but I am coufused totaly on how to find pH of salts

A strong acid has a low pH; for example HCl is around pH of 2. A high pH would indicate a base. A strong acid would not have more OH, so your wording is confusing.
 
  • #5
which one of them is the strongest base?!
 
  • #6
A strong base has weak conjugate acid ion.

Compare the relative strength of all the conjugate acid ions

Think along this line

Kelvin
 
  • #7
this might be useful, although I'm sure you have something similar in your own textbook

http://spiepho.sbc.edu/worksheets/Gen_Chem_2/Chp15,pH_Salt_Solutions.doc
 
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