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Continuing into the world of acids and bases…
pH of a solution is the negative logarithm of the hydrogen ion concentration pH = -log [H + ] This number represents how strong or weak an acid/base is
The pH scale ranges from 1-14 pH less than 7 is an acid the lower pH = the stronger the acid pH greater than 7 is a base the higher the pH = the stronger the base
Find the pH if the hydrogen concentration are as follows: a) 1.0 x 10 -2 M b) 3.0 x 10 -6 M c) 0.0055 M
pOH = - log [OH - ] Everything is the opposite pOH less than 7 = base The lower the pOH, stronger the base pOH greater than 7 = acid The higher the pOH, stronger the acid
Find the pOH for the following hydroxide concentrations: a) 1.0 x 10 -6 M b) 0.000033 M
pH + pOH = 14 Find the pH if a solution has the following hydroxide concentration: [OH - ] = 8.2 x 10 -6 M
What if you are given the pH and want to find the concentration of hydrogen ions? [H + ] = 10 -pH
1) What is the [H + ] if the pH is 8.9? 2) What about if the pH is 2.3?
K w = 1.0x 10 -14 M 1.0 x 10 -14 = [H + ] [OH - ]
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PH worksheet (#1). 1. What is the pH of a solution with a hydrogen ion concentration of 1.0 x M? pH = -log [H + ] = - log (1.0 x ) = 5.
Acids and Bases. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0
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Chemistry Notes pH and [H + ] Working with the Arrhenius acid definition, we say that acids produce hydrogen ions: HX H + + X - And bases produce hydroxide.
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