Question

Calculate the dissociation constants K1and K2 for carbonic acid (H2CO3) at half-neutralization
point and compare to literature values.1,2

Answer 1

Ignore 1,2

Answer 2

I know the equations to use are:

Answer 3

I'm provided with values, but they're multiple data sets.

Answer 4

The averages account to: 137 mg NaHCO3 and 103 mg Na2CO3.

Answer 5

@nincompoop @inkyvoyd @bahrom7893 come do a science

Answer 6

So for the first constant, \(\sf K_1=\dfrac{[H^+][HCO_3^-]}{[H_2CO_3]}\)

you need to have the initial mass of carbonic acid, convert both sodium bicarbonate and carbonic acid to moles. Subtract the moles of sodium bicarbonate from carbonic acid then plug your values in. (note that \([H^+]=[HCO_3^-]\))