Predict the change in pH when sodium lactate is added to a solution of lactic acid....

Predict the change in pH when sodium lactate is added to a solution of lactic acid.

Increase

Decrease

Stay the same

Solutions

Expert Solution

Answer :

pH will increase.

Explanation :

Lactic acid <==> H+ + Lactate ion

Equilibrium is maintained in only lactic acid solution.

When sodium lactate is added into the Solution, backward reaction proceed according to Le-chatelier's principle because if we increase concentration of any of product ( here lactate) than equilibrium will shift in that direction where its effect can be reduced which is in backward direction. So, concentration of H+ will decrease and pH will increase.

pH = - log (H+)

Lactate will combine with H+ already dissociated in lactic acid solution and form lactic acid . Due to which concentration of H+ will decrease in the solution which means Solution become less acidic . So, pH will increase .

High pH means basic Solution and low pH means acidic solution.

queen_honey_blossom answered 2 years ago

Next > < Previous

Related Solutions

A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.56. Calculate the ratio of the lactate concentration to the lactic acid concentration in this solution.

During exercise when the body lacks an adequate supply of oxygen to support energy production, the pyruvate that is produced from the breakdown of glucose is converted into lactate. High lactate levels can lead to acidity in the muscle cells as some of the lactate hydrolyzes to lactic acid. The dissociation of lactic acid to lactate is shown in the reaction below. Lactic acid has a pKa of 3.86. A solution containing a mixture of lactic acid and lactate was found to...

What is the origin of the lactate or lactic acid?

Calculate the pH of the solution that results when 15.0 mL of 0.1650 M lactic acid...

Calculate the pH of the solution that results when 15.0 mL of 0.1650 M lactic acid is A) diluted to 45.0 mL with distilled water B)mixed with 30.0 mL of 0.0825 M NaOH solution. C)mixed with 30.0 mL of 0.140 M NaOH solution. D)mixed with 30.0 mL of 0.140 M sodium lactate solution.

What weight of sodium lactate should be added to make 750 mL of a pH 4.00...

What weight of sodium lactate should be added to make 750 mL of a pH 4.00 buffer solution that is 0.80 M in lactic acid? The Ka for lactic acid is 1.38×10-4.

How many Hydrogen ions are in aqueous form in in a lactic acid solution of pH...

How many Hydrogen ions are in aqueous form in in a lactic acid solution of pH 5.5 of 1 mL?

List the 5 ways lactate is cleared. What are the 3 physiological effects of lactic acid...

List the 5 ways lactate is cleared. What are the 3 physiological effects of lactic acid (lactate accumulation or more specifically H+ ions) ? What is the fastest way to clear high levels of lactate?

What is the pH of a buffer solution that contains 0.350M pyruvic acid and 0.150M sodium...

What is the pH of a buffer solution that contains 0.350M pyruvic acid and 0.150M sodium pyruvate? Ka = 4.1x10^-3 Select one: A. 4.72 B. 2.82 C. 2.02 D. 2.76 What is the pH of a 100.0mL buffer solution that contains 0.215M acetic acid and 0.255M sodium acetate after 0.055 mmol HCl is added. Assume no volume change. Ka = 1.8x10^-5. Select one: A. 4.61 B. 4.87 C. 5.03 D. 5.48 Calculate the change in pH after 0.010 mole HCl...

12. A 15.7-g sample of sodium carbonate is added to a solution of acetic acid weighing...

12. A 15.7-g sample of sodium carbonate is added to a solution of acetic acid weighing 19.4 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After reaction, the contents of the reaction vessel weighs 28.4 g. What is the mass of carbon dioxide given off during the reaction? 13. Cadmium metal reacts vigorously with yellow crystals of sulfur to produce a yellow powder of cadmium sulfide. A chemist determines that 112 g of cadmium reacts with...

1) a) Calculate the pH of a buffer that is 0.12 M in lactic acid and...

1) a) Calculate the pH of a buffer that is 0.12 M in lactic acid and 0.11 M in sodium lactate. (b) Calculate the pH of a buffer formed by mixing 85 mL of 0.13 M lactic acid with 95 mL of 0.15M sodium lactate. 2) You are asked to prepare a pH=3.00 buffer solution starting from 1.25 L of a 1.00 M solution of hydroflouric acid (HF) and any amount you need of sodium flouride (NaF). (a) What is...

A buffer solution is 0.20 M in acetic acid and sodium acetate. Calculate the change in...

A buffer solution is 0.20 M in acetic acid and sodium acetate. Calculate the change in pH upon adding 1.0mL of 0.10 M HCL to 10mL of this solution.

Subjects