Given an acid with a concentration of 0.4 M in a 1 liter solution, answer the...

Given an acid with a concentration of 0.4 M in a 1 liter solution, answer the following questions:

What is the pH if pka = 4.76

What is the pH after the addition of 0.2 mol NaOH (pka =4.76)?
What is the ka of a solution with 0.65 M HA and 0.44 M A- (pH=6.0)

Expert Solution

queen_honey_blossom answered 3 weeks ago

1) An aqueous solution contains 0.34 M nitrous acid. One Liter of this solution could be...

1) An aqueous solution contains 0.34 M nitrous acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) 0.17 mol HCl 0.35 mol HCl 0.35 mol KNO2 0.086 mol Ca(OH)2 0.34 mol KCl 2) An aqueous solution contains 0.26 M ammonium chloride. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant...

A 1 liter solution contains 0.487 M acetic acid and 0.365 M sodium acetate. Addition of...

A 1 liter solution contains 0.487 M acetic acid and 0.365 M sodium acetate. Addition of 0.183 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.474 M hydrocyanic acid and 0.356 M potassium cyanide. Addition of 0.391...

1. A 1.00 liter solution contains 0.38 M acetic acid and 0.49 M sodium acetate. If...

1. A 1.00 liter solution contains 0.38 M acetic acid and 0.49 M sodium acetate. If 0.120 moles of calcium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of calcium hydroxide.) A. The number of moles of CH3COOH will remain the same. B. The number of moles of CH3COO- will decrease. C. The equilibrium concentration of H3O+ will decrease. D. The pH will...

A) A 1 liter solution contains 0.347 M hydrofluoric acid and 0.260 M potassium fluoride. Addition...

A) A 1 liter solution contains 0.347 M hydrofluoric acid and 0.260 M potassium fluoride. Addition of 0.130 moles of hydroiodic acid will: (Assume that the volume does not change upon the addition of hydroiodic acid.) __Raise the pH slightly __Lower the pH slightly __Raise the pH by several units __Lower the pH by several units __Not change the pH __Exceed the buffer capacity B) Which of the following aqueous solutions are good buffer systems? . __0.27 M ammonium bromide...

A 1 liter solution contains 0.382 M hydrofluoric acid and 0.509 M sodium fluoride. Addition of...

A 1 liter solution contains 0.382 M hydrofluoric acid and 0.509 M sodium fluoride. Addition of 0.191 moles of sodium hydroxide will: (Assume that the volume does not change upon the addition of sodium hydroxide.) Raise the pH slightly, Lower the pH slightly, Raise the pH by several units, Lower the pH by several units, Not change the pH ,Exceed the buffer capacity

a. A 1 liter solution contains 0.509 M hypochlorous acid and 0.382 M potassium hypochlorite. Addition...

a. A 1 liter solution contains 0.509 M hypochlorous acid and 0.382 M potassium hypochlorite. Addition of 0.191 moles of hydroiodic acid will: (Assume that the volume does not change upon the addition of hydroiodic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity b. A 1 liter solution contains 0.246 M hypochlorous acid and 0.328 M potassium hypochlorite. Addition...

A 1 liter solution contains 0.436 M hypochlorous acid and 0.581 M sodium hypochlorite. Addition of...

A 1 liter solution contains 0.436 M hypochlorous acid and 0.581 M sodium hypochlorite. Addition of 0.109 moles of barium hydroxide will: (Assume that the volume does not change upon the addition of barium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.460 M hydrofluoric acid and 0.345 M potassium fluoride. Addition of 0.380...

1) calculate the concentration of maleic acid solution?given : 25.00 mL of maleic acid of unknown...

1) calculate the concentration of maleic acid solution?given : 25.00 mL of maleic acid of unknown contration is diluted with 50.00 mL of water. It is used to titrate 49.72mL of 0.1 M NaOH solution. 2)calculate the concentration of the diluted and undiluted CH3COOH (aq) solution. given: 25.00 mL of unknown acetic acid solution is diluted with 50.00 mL water. It is used to titrate 49.83 mL of 0.1 M NaOH solution

An aqueous solution contains 0.30 M hydrocyanic acid. One Liter of this solution could be converted...

An aqueous solution contains 0.30 M hydrocyanic acid. One Liter of this solution could be converted into a buffer by the addition of which of the following reagents? (Assume that the volume remains constant as each substance is added.) Question 15 options:(more than one choice) 0.15 mol HClO4 0.30 mol KClO4 0.31 mol HClO4 0.31 mol KCN 0.149 mol NaOH

Calculate the fraction of nitrous acid deprotonated if the solution concentration is 0.241 M. The acid...

Calculate the fraction of nitrous acid deprotonated if the solution concentration is 0.241 M. The acid dissociation constant of nitrous acid is 3.0 x 10^-8. How do you solve for x?

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