3) What is the pH of a 0.25 M solution of the weak acid, HNO2 (Ka = 4.5 x 10-4)?
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what is the ph of a solution that is 0.25 M KNO2 and 0.35 M HNO2(nitrous acid)? (Ka for HNO2=4.5*10^-4)
Nitric acid, HNO2, is a weak acid with Ka = 4.5 x 10-4. It dissociates according to:
HNO2(aq)Ā ā H+(aq) + NO2-(aq)
What is the pH of a buffer solution which is 0.80 M in NO2- and 0.40 M in HNO2?
**please answer correctly
1a. Nitrous Acid (HNO2) has a Ka = 4.5 X 10-4 at room temperature. What is the pH of a 1.43 M solution of nitrous acid?
pH =
1b. If the pH for a 0.0201 M solution of a weak acid is 6.43, what is the Ka for this acid?
ka=
1c. A 0.031 M solution of a weak acid is 5.27 percent ionized in solution. What is the Ka for this acid?
Ka =
1d. The pOH of a 0.63 M weak acid solution is 10.3. What is the Ka for this weak acid?