Question 21 6 pts
In black and white photography excess AgBr(s) is removed by allowing it to react with
Na2S2O3 to form the water soluble complex [Ag(S203)213-.
What is the molar solubility of AgBr in a solution with equilibrium concentration of
S2032-being 0.496 M?
Ky for (Ag(S203)2]3- is 2.90 x 1013 and Ksp for AgBr is 5.35 x 10-13
Express your answer in Musing at least three significant figures. Do not use scientific
notation.
I

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]