U ? 1) Malic acid (HC4H5Os) has absolutely nothing to do with pumpkin spice, but a 0.470 M solution of malic acid ha...

Question

Question

U ? 1) Malic acid (HC4H5Os) has absolutely nothing to do with pumpkin spice, but a 0.470 M solution of malic acid has the sam

science chemistry

Answer 1

Answer #1

For H2SO4,

[H+] = 2*[H2SO4]

= 2*4.027*10^-3 M

= 8.054*10^-3 M

HC4H5O5 dissociates as:

HC4H5O5 -----> H+ + C4H5O5-

0.47 0 0

0.47-x x x

Ka = [H+][C4H5O5-]/[HC4H5O5]

Ka = x*x/(c-x)

Ka = 8.054*10^-3*8.054*10^-3/(0.47-8.054*10^-3)

Ka = 1.404*10^-4

Answer: 1.40*10^-4

Answer 2

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