(26pts)4. A nerchlorale in osto f tebm (II) perchlorate [Yb(CIO)] is made by dis

Question

(26pts)4. A nerchlorale in osto f tebm (II) perchlorate [Yb(CIO)] is made by dissolving 208.58g ytterbium (II perchlorate in 950.0 of sol molanty(M.andomm1ofs luton. Dersity ofsolution is this solution is 1.109 gh! What is (mm)% n 1m80,solution-9OX 1-1 09:10 53.55am MIRA Yo Lie@o4)J-ao8.s8x10011053.5sIA, 80010 molu 950 mL= 0.45 L Molavity of mole Ivlume of solui in liter 4 045 0406 m (21.45% (22pts)5. What is the molarity 129.68 ml of sulfuric acid solution that used in neutralize 212.54 ml of 0.1416 M Potassium Hydroxide (KOH) H:SOs+

Explanation / Answer

Ans 4)

So mass = density X volume = 1.109 x 950 = 1053.55 gm solution

              = 208.58 X 100/ 1053.55

So, m/m % = 19.797 % w/w

                 = [208.58 X 1000]/ [471.391 X 950] = 0.465 M

              = 208.58 X 100/ 950

So, m/v % = 21.955 % w/v

Ans 5) Molarity of H2SO4 is calculated as follow;

M1V1 = M2V2                                       Where, M1 = molarity of H2SO4                  V1 = volume of H2SO4

M1 X 129.68 = 0.1416 X 212.54                M2 = molarity of KOH                      V2 = volume of KOH

So M1 (molarity of H2SO4) = 0.232 M

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