Question

Can someone help me solve these General chemistry questions??? thank you!

The literature value for the Ksp of zinc oxalate is 2.7 x 10".Calculate % error comparing your Ksp to the literature value? Over the years the class average for the Ksp for this experiment has been 1.19 x 107. Calculate the % error comparing your Ksp to the average class value. 3. Based on the literature value what is the molar solubility (Ⓡ) of zinc oxalate? 4. What would be the molar solubility of inc oxalate that is placed into a solution that contains 0,010 M NaC04?

Answer 1

on alate, The literature value of Rsp. of zine is. 27 41018 Rgr (lit) - 2.78108 . from the calculation, Ksp. (Cali) & 1:08x100 .. 'error : Ksp cal.) - k sp (Lit.) Lim X100% кttu+ ) 1,08 X10-$29.78108 . xt 80% : ..27x10-8

= -60:01 The class average of Ksp of Zinck oxalate Koppelerss av.) 2 1019x107 Ksp (eat) a Calculated Kep .: 241.08 x10-8 . ::% errore sp (Calin - Ksp (crass av.) .mov - Kerlclass and 'x100 1:08 x108- 1.13 X10 ? x 100 li 19 x 10+ - - 90.923 . - 3. lat, Literature the molar solubility (s) of zine oxalate ix S (M). Then according to the reaction. Zn11204)62 2m2109) + 420 -698). then, Xe Ksp = (2x243.[904] since the motar solubility of an GОa is scan. at at equilibrium, the consertations are [ 2027) ss ( [Og :) = 5 cm . Ksp 2 S² Citerature value of Kap sa VK sp is 2-7x108) 2) şi (2781078912

2, с. 1: G4 x 10 м ... ти па\1 Gua + En 404 41-4 жiр 'м let the in o-oтo и molar solubility of Znço a Mc, 40, 4 х , Then concentration of Zn27 , Г.*) , им Naż CLOq Znat + (20g? о: ото о 2xo •oto o • o o ... т » » hrо» і «_0- 2 с. 94-) . (х+ оТо) м :. Кст 2 С2,11) [ 4-) г) Ket х (хто опа) -) x2 +о онох , 2.1 xio 8 м2 + e-De o oo x-2-7 х 1ъ® :. х , х — орто т оо10) 2 + 4x 2 х 10°* 2 41 — О01 o + о.ото 2. never be negative, Hences - д о + осно soutility . х , г. x2 он
Hence ZnC2O4 is not soluble in 0.010 M Na2C2O4 solution.