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

What kind of reaction occurs when a molecule of glucose reacts with oxygen to give carbon dioxide and water? A. an exothermic reaction B. an endothermic reactio

Shelley compared the number of oak trees to the number of maple trees. she counted 9 maple trees to every 5 oak trees in the beginning of the year. at the end o

Write 0.3 as a fraction in simplest form.

State the mathematical relationship between average velocity, displacement, and time interval.

what does the chalzae do for a egg

It is a Saturday morning and Jeremy has discovered he has a leak from the water heater in his attic. Since plumbers charge extra to come out on weekends, Jeremy

The information booklet for a video console says that the console uses about 0.2 kilowatt of electricity per hour. If electricity costs $0.15 per kilowatt hour,

Who was the 21st president of the United States ?

Label the major joints of the body below

Describe the graph of a linear equation of Ax+By=C for which a)A=0 b)B=0 c)C=0 Use complete sent