PH question, I really don't get this

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SUMMARY

The discussion centers on calculating the concentration of hydronium ions ([H3O+]) in acid rain with a pH of 4.23. The relevant equation used is pH = -log[H3O+], which can be rearranged to [H3O+] = 10^(-pH). By substituting the given pH value, the correct concentration of H3O+ ions is determined to be approximately 5.8 x 10^-5 M. The user successfully applies the logarithmic function to solve the problem after clarification on calculator usage.

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Homework Statement


What is the [H3O+] of acid rain with a pH of 4.23?


Homework Equations


pH = -log[H30+]
pOH = -log[OH-]
pH + pOH = 14


The Attempt at a Solution



the four possible choices are
a. 1.7 x 10^-10
b. 5.8 x 10^-5
c. 2.3 x 10^-4
d. 1.7 x 10^5
 
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You are given the pH and need to calculate the concentration of the H_{3}O^+ ions. Which equation should you use?
 
I know I have to use the first one but I don't know how to do the reverse of it
 
Since pH = -log[H30+] or pH = -log[H+]
H3O+/H+ = 10^(-pH)
 
Last edited:
But I don't get how to plug it in on my calculator
 
night nurse 991 said:
But I don't get how to plug it in on my calculator

10^(-pH)
10 to the -pH power.
 
Oh okay I got the answer thank you so much!
 

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