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Concentration of hydroxide ions

  • #1
50
10

Homework Statement


The hydroxide ion concentration in an aques H2CO3 solution is 4X10^{-4}M at 25°C OH- ion concentration in the solution is

Homework Equations



Ph=log(H+ or OH-) [/B]


The Attempt at a Solution



I calculated the PH of H+ in the solution which came to be 4.3979.Considering this to be water solution , I get POH to be 10.602..This doesn't match answer. Where did I go wrong[/B]
 

Answers and Replies

  • #2
Borek
Mentor
28,327
2,714
which came to be 4.3979
Check your math.

Note: you are showing way too many figures in your results. 4.4 would do here (and would be exactly as wrong as what you wrote).
 
  • #3
epenguin
Homework Helper
Gold Member
3,631
701
Don't forget to tell us what the question is. Given the concentration of hydroxide ion calculate the OH- concentration is the easiest question I've seen here yet.
 
  • #4
19,799
4,048
Don't forget to tell us what the question is. Given the concentration of hydroxide ion calculate the OH- concentration is the easiest question I've seen here yet.
Who is the George Washington bridge named after?
 
  • #5
epenguin
Homework Helper
Gold Member
3,631
701
Who is the George Washington bridge named after?
GW?
 

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