How Do You Calculate Moles and Concentration of Ca(2+) in CaC2O4H2O?

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SUMMARY

The discussion focuses on calculating the moles and concentration of Ca(2+) in calcium oxalate monohydrate (CaC2O4·H2O). The participant determined the weight of CaC2O4·H2O to be 0.2354 grams and calculated its molecular weight as 146.112 g/mol. They correctly identified that the mass percentage of Ca(2+) in the compound is 27.42%, leading to the conclusion that the moles of Ca(2+) can be derived from the total moles of CaC2O4·H2O. The concentration of Ca(2+) requires further calculations based on the volume of the solution.

PREREQUISITES
  • Understanding of molecular weight calculations
  • Knowledge of mass percentage and its application in chemistry
  • Familiarity with the concept of moles in chemical compounds
  • Basic understanding of solution concentration calculations
NEXT STEPS
  • Calculate moles of Ca(2+) using the formula: moles of Ca(2+) = moles of CaC2O4·H2O × 1 (since one mole of CaC2O4·H2O contains one mole of Ca(2+))
  • Determine the concentration of Ca(2+) using the formula: concentration (mol/L) = moles of Ca(2+) / volume of solution in liters
  • Review stoichiometry principles to reinforce understanding of mole relationships in compounds
  • Explore practical applications of calcium oxalate in biological systems and its significance in chemistry
USEFUL FOR

Chemistry students, laboratory technicians, and anyone involved in analytical chemistry or studying the properties of ionic compounds.

Dooga Blackrazor
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Homework Statement



I did an experiment and found the weight of CaC(2)O(4)H(2)0 to be 31.4966 subtracted by the weight of a crucible which is 31.2612.

I put this for my weight of CaC204H20 (as I can't think of any other weight that it would be requested). I followed the next question calculating molecular weight. 146.112. After that I calculated the moles of CaC204H20 to be 1.6 x 10^-3 (not sure on this).

I now need the moles of Ca(2+ charge). There are 27.42% Ca(2+) mass percentage of it.

I don't know what to do from there. Same goes for the concentration of Ca(2+)


Homework Equations





The Attempt at a Solution



If I had to guess, I would say the moles of Ca2+ are 0.2742 times 146.112, but I am not sure.

Concentration, I have no clue. I have been looking through my online notes on this for hours now. Thanks for any help.
 
Physics news on Phys.org
Your calculation of the moles of CaC2O4*H2O is correct. According to the formula of the compound, how many moles of Ca2+ does one mole of the compound contain?
 

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