elijahbravo89 elijahbravo89

20-02-2019
Chemistry

contestada

If a weak acid is 25 deprotonated at ph 4 what would the pka be

Respuesta :

colochosdeoro colochosdeoro

20-02-2019

4.48

pH=pKa+log([A-/HA])

25% deprotonated tells us that A- is .25 and that the rest (75% is protonated) thats .75.

4 = pKa + log \frac{.25}{.75}

4 - log \frac{.25}{.75} = pKa

4.48=pKa

Answer Link

Otras preguntas

45.1 divided by 1000

Fill in the blank with the spanish word that best completes the following sentence. Las flores están hermosas en el ___________. Cortina pared suelo jardín.

write about election and its process in nepali

Which best describes the quotient of 3 ½ ÷ ¼?

Mr. Ramirez has $1,200 to purchase supplies for the science department. He purchases a set of chemicals that costs $314 and 4 cases of safety glasses. Each case

In at least one hundred words, explain how this excerpt uses explicit and implicit details to describe sarah penn.

Nitric oxide (NO) reacts with oxygen and water to produce nitrous acid (HNO2) as the only product. How many molecules of nitric oxide react with each oxygen mol

A real estate company sells small models of houses. The scale factor of the models to the actual houses is 0.5 ft:10 ft. Find the ratio of the areas of the mode

A fair die is rolled 9 times. What is the expected value of the sum of all 9 rolls?

Select all the numbers that are equivalent. 4.836 × 106 and 4,836,000,000 5.812 × 10-7 and 0.0000005812 5.46 × 1011 and 546,000,000,000 4.836 × 10 and 4,836,000