Question

to answer number 28. you refer back to 24. but im stuck on it ans confused.

2NaC1 HOH c. + MgC12 + H2S04> Na2S04+2HCI d. Ca(OH)2+ Pb(NO3)2> Ca(NO3)2 + Pb(OH)2 3 parts) What is the H+ concentration and pH of a 0.20 M solution of hypochlorous acid, Ka 3.5 x 10*? (SHOW ALL STEPS FOR CR CONC. AND SOLVE FOR 22.pH ) 20. ICE CHART, sOLVE FOR 21 23. What is the hydroxide ion concentration and pH of a 0.10 M solution of N Kb = 1.8 x 10. At 25℃ the Kap for strontium sulfate, SrSO, is 7.6 x 10" and the Ksp for strontium fluori rF2, is 7.9 x 1010. What is the molar solubility of SrSO4 in water at 25°C? 24. 25 (from #24) What is themolarsolubility of SrF2 in water at 25°C? 26. (from #24) An aqueous solution of Sr(Noh is added slowly to 1.0 L of a well stirred solution containing 0.020 mole F and 0.100 mole SO42 at 25°C. Which salt precipitates first? What is the concentration of strontium ion, Sr*, in the solution when the first precipitate begins to form? Coa .0810 m 27. (from #24) As more Sr(NO)h is added to the mixture in a second precipitate begins to form. At that stage, what percent of the anion of the first precipitate remains in solution? In a saturated solution of MgF2 at 18°C, the concentration of Mg2"s 121 x 103 M. The equilibrium is represented by the equation below 28, (24) Write the expression for the Ksp and calculate its value at 180C.

Answer 1

19) H+ ion concentration can be calculated by using the following formula

[H+] = √KaC

pH=-log [H+]

Where Ka dissociation constant of weak acid

C is concentration of the solution

The calculations are as follows

l D ST 8.366 치 ㅡㅡlog 8.366시。 2 o0 1077log8 366 = D'92.25 . рн o8