value of Ka

Hydrocyanic acid is widely used in the chemical industry in the production of plastics, dyes, and explosives. When forming an aqueous solution, it presents a ka= 4.9?10−10. If you have a 1 M solution, you can consider that: a) the concentration of the conjugate base is less than that of the undissociated acidb) the concentration of the conjugate base is greater than that of the undissociated acidc) the solution formed, results with a basic characterd) the concentrations of the conjugate base and the conjugate acid are the same

Calculate the pH of a solution that is 0.450 M HC2H2O2 and 0.730 M NaC2H3O2. The Ka for acetic acid is 1.80 x 10-5. Does this correspond to an acidic or basic pH?

What are the concentrations of hydrogen ion and hydroxide ion in household ammonia, an aqueous solution of NH3 that has a pH of 11.50?

What is the Ka of hydrazoic acid if a 0.020 M hydrazoic acid aqueous solution has a pH of 3.22?

The pH of a 0.800 M aqueous solution of a weak acid is 1.99. What is the value of Ka for this acid?

(a) Papaverine hydrochloride is an alkaloid drug used as a muscle relaxant, particularly for acute myocardial infarctions and angina It is a weak acid. If a 0.205 M solution of papaverine hydrochloride has a pH of 3.31, what is its Ka?

Give the formula for the compound formed when (a) selenium dioxide reacts with water and (b) strontium oxide reacts with water. In each case is the product an acid or a base?

Hydrofluoric acid (HF) has a Ka value of 7.2 x 10^-4. What is the pH to 2 decimal places when 13.75 mL of a 1.074 M solution of KOH has been added to 27.5 mL solution of hydrofluoric acid with concentration 0.537 M.  Hydrofluoric acid (HF) has a Ka value of 7.2 x 10^-4. What is the pH to 2 decimal places when 17.20 mL of a 1.074 M solution of KOH has been added to 27.5 mL solution of hydrofluoric acid with concentration 0.537 M.

The artificial sweetener saccharin (shown below) is a weak acid (pKa = 2.32 at 25 °C). It is used in its salt form, sodium saccharide. Calculate the pH of 0.10 M solution of sodium saccharide at 25 °C