Question

60 ANALO47% Determining che Formula ofan Ionic Hydrate Gravímerically 3. Upon being heated, calcium oxalate monohydrate, CaC,o, H20, undergoes a series of temperature- Eq. 6) (Eq. 7) (Eq. 8) A student paid little attention to the size of his burner flame while heating a 0.979-g sample of related changes, as shown in Equations 6-8. CaC20, H20(s) 10-120 CaC,Os(s)+ H2018) 40- CaCos(s)+CO(g) caco,(s) HRC CaO') +001g) CaC20, H2O. The final mass of the cooled solid was 0.670 g. (a) Was the reaction product anhydrous calcium oxalate? Briefly explain. (b) Assuming that the final product was pure, what was the final product? Briefly explain. 2. (a) Write the chemical equation for the formation of strontium oxalate monohydrate from strontium oxalate (SrC20) (b) A 0.500-g sample of SrC20s was used as a desiccant. Calculate the mass of the completely hydrated salt. (c) Suggest a method for regenerating the desiccant form of SrC204 once the salt has been completely hydrated. Briefly explain.

Answer 1

0TTo given equatan 00-I20% 146 molztulaoi wciyht ISY 0,853 gm 어 Ca C204. St, Final podu(Ignat- Inmoll of C ร์เ9.ly, toti gryt Innolc or Caco, So, CouC0