Determining the Chemical formula of a hydrate, please show all steps. The inform

Question

Determining the Chemical formula of a hydrate, please show all steps. The information is as follows:

Please can someone solve this? I am having trouble. Thank you!!

4. Determining the Chemical Formula of a Hydrate. The following data has been collected by heating a sample CuxCly H2O and from rehydration and REDOX reaction using Al wire. Showing all calculations with properly labeled units determine the formula of the hydrate. Note: Not showing the work will result in no credit regardless of the correct formula Mass of Crucible 12.972 g Mass of Crucible and Hydrated Sample 13.968 g Mass of Crucible and Dehydrated Sample 13.762 g Mass of Empty Watch Glass 18.391 g Mass of Filter Paper 0.954 g Mass of Watch Glass, Filter Paper, and Copper 19.728 g

Explanation / Answer

Hydrate mass = 13.968-12.972 = 0.996 g of hydrate

Dehhdrate sample = 13.762-12.972 = 0.79 g

mass of copper = 19.728 - (0.954 + 18.391) = 0.383 g

so..

mol Copper = mass/MW = 0.383/63.5 = 0.006031 mol of Cu

mass of H2O = 0.996 - 0.79

mol of H2O = 0.206/18 = 0.0114 mol of H2O

mass of Chlorine = 0.79 - 0.383 = 0.407

mol of Clk = mass/MW = 0.407/35.5 = 0.01146

relate Cu vs Cl

0.006031 / 0.01146 = 0.5

meaning that we have:

(CuCl2)*H2O

relate CuCl2 and H2O

0.0114 /0.006031 = 1.9 so 2

therefore

CuCl2* 2H2O

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.