Question

trend line: y= o.o221x + 0.0656 ; R^2= 0.989

Assume that our dye compound, XA, undergoes the following equilibrium in aqueous solution:

XA(aq) ⇄ X+(aq) + A−(aq) (Both X+(aq) and A−(aq) are colorless)

If a solution initially contains 30.4 μM XA and no X+ or A− prior to equilibrium, what are the concentrations of all three species if the equilibrium mixture gives an absorbance of 0.297 measured at a wavelength of 500.0 nm? Report answer in units of μM. (Hint: initial-change-equilibrium and you know some equilibrium information.)

Answer 1