Pre-lab 6 : pKa of acetic acid. Acidic rain.
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6 Terms
1
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Acetic acid is a:
Weak acid
2
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Write the dissociation of acetic acid (CH3COOH in water
CH3COOH + H2O ← → CH3COO- + H3O+
3
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Based on your answer to the previous question, express Ka for acetic acid
Ka= [CH3COO-][H+]/ [CH3COOH]
4
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If the pH f a solution is 2.03, what is the [H+]?
9.3 × 10^-3
5
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In the second part of the experiment, we will generate gases from NaHCO3 , NaNO2, and NaHSO3, and ten react these gases with water to form acids. Write formulas and names of the acids produced (for any of the three chemicals).
NaHCO3 + H2O ← → NaCO2 + H3O (sodium bicarbonate)
NaHSO3 + H2O ← → NaSO2 + H3O (sodium bisulfite)
6
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Sulfur dioxide reacts with water to produce:
Sulfurous acid
Note 
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