Calculate the pH of a 0.27 M solution of HCO2H (formic acid, Ka = 1.8 x 10–4).

What is the pH of a 0.450 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?

Calculate pH of 0.050 M NaClO, given that the Ka for HClO is 3.0 ×10–8 pH= 5.46 pH= 8.53 pH= 10.11 pH= 12.27

Acetic acid (CH, COOH, Ka 1.80 x 10-5) is a weak acid, so the salt sodium acetate (CH, COONA) acts as a weak base. Calculate the pH of a 0.384 M solution of sodium acetate. pH =

For H2CO3, Ka1 = 4.3 × 10–7, Ka2 = 4.7 × 10–11. What is the pH of a 0.36 M solution of carbonic acid?

The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10–8. (a)The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution.  (b)Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation.  (c)Suppose the solution in (a) is diluted by 1million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.

A solution of 1.5 M chlorous acid has a pH of 0.91.  What is the percent ionization of the chlorous acid in this solution?  For HClO2, KA = 1.1 x 10−2.

What is Ka for the conjugate acid of NH₃ (Kb = 1.8 × 10⁻⁵)?