Question

a solution is prepared by combining the following: 200mL .1 M H2SO4 100mL .2 M NaOH 700mL .143 M K2SO4 The pH of the solution = 3.6 What is the Ka of HSO4?

rißPIPd An aqueous solution of NaF is prepared by dissolving 0.350 mol of NaF in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 °C. The Kb of F- is Styles Eupp You are asked to prepare 100 ml of a propanate/propanoic acid buffer with a plH of 5.5. Ka for C2H5COOH= 1.34 x 10-5 If you used 40 ml of a 0.1 M C2H5COOH solution, what volume of a 0.4 M Na C,HCOO solution would you need to prepare the solution? I A solution is prepared by combining the following: 200 ml 0.10 M H,SO 100 ml 0.20 M NaOH 700 ml 0.143 M K,SO The pH of the solution is 3.60 The Ka of HSO

Answer 1

1000ml 1000 ml (non a zoome tool = 0.02m [Navnja 100 ml x 0.2m 0-02m resou) a Toomexo. 143m = 0.100LM 10oome Nooh would neutralise to and form Natsuy. NOWH + H₂SO4 Nausur. (Nauso4] a 0.02m=c to [4+] = cx = 103.6 6(1-2) cx ((x+0.1001) ka = (CX +0.1001) CR - (2.51189x15470.1001) 001256) Elix) 20' 01256 ka=1.2764x153 Ka= 1026X163 (Answer) (of 4SOL) 103.6 2.51189X10 0.02 0.02 -0.01256 +40 2 HF + oH 48.93 ; po 14-8193=5.07 ron] = so.ke & 155.07 - 10.350 mxka 0.350 0kg = 7.244x10 Kocm) = 2.07 X1OO (Anwes)