{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

EXPERIMENT4

# EXPERIMENT4 - Mass of filter paper watch glass 64.746g Mass...

This preview shows pages 1–2. Sign up to view the full content.

EXPERIMENT #3: DETERMINATION OF A CHEMICAL FORMULA Eliot Sanford Lab Partner: Ranjita Bandi CH 1211-19 Instructor: Shashank Kulkarni Wednesday 3:00-5:50 September 26, 2007

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Experiment 4 Data and Calculations: Resolution Determinations of a Chemical Formula Atomic masses: Copper 63.45g/mol Cl 35.45 g/mol H 1 g/mol O 16 g/mol Mass of evaporating glass + watch glass 130.357 g Mass of evaporating glass + hydrated sample 130.357+1.000= 131.357 g Mass of hydrated sample + watch glass 1.000 g Mass of evaporating glass + dehydrated sample + watch glass 131.179 g Mass of dehydrated sample 131.179-131.357= 0.822g
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Mass of filter paper + watch glass 64.746g Mass of filter paper + copper 65.254g Mass of copper 0.508g No. moles of copper 0.508*(1/63.45)= 0.01 moles Mass of water evolved 1.000-0.822= .178g No. moles of water 0.178*(1/(5*18))= .002 moles Mass of chlorine in sample (by diff.) 1.000 – (0.508-0.178)= 0.670 g No. of moles of chlorine 0.670*(1/35.45)= 0.02 moles Mole ratio, chlorine: copper in sample 2:1 Mole ratio, water:copper in hydrated sample 2:1 Formula of dehydrated sample (round to nearest integer) CuCl 2 Formula of hydrated sample CuCl 2* 5H 2 O...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

EXPERIMENT4 - Mass of filter paper watch glass 64.746g Mass...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online