11pGravimetricNaHCO3

11pGravimetricNaHCO3 - Final Exercise 105 points...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style in a Mixture Final Exercise – 105 points Gravimetric Determination of NaHCO3 Last Update: 2/2/10 07:09:28 AM
Background image of page 1

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

View Full DocumentRight Arrow Icon
CHE 133 MAKE-UP LABORATORY EXERCISE Friday (tomorrow) After Quiz, before checl out either a TEST (105 point) or PRELIMINARY (55 point) Exercise MUST SIGN UP TODAY All students will do SUSB-055 (Do pre-lab) Download at: http://www.ic.sunysb.edu/Class/che133/susb/SUSB055.pdf
Background image of page 2
Purpose: Determine the percent of NaHCO3 in a mixture by Gravimetry Concepts: Thermal Decomposition Constant Weight Techniques: Weighing Apparatus: Analytical Balance Bunsen Burner Crucible Crucible Tongs
Background image of page 3

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

View Full DocumentRight Arrow Icon
This Part of the Exercise is, again Conceptually Simple. 1. Weigh Sample, 2. Decompose the sample by heating 3. Weigh product to get weight of CO2 & H2O lost weight loss = wCO2 + wH2O = nCO2 * 44.01 + nH2O * 18.02 2 NaHCO3 (s) Na2CO3 (s) + H2O (g)+ CO2 (g) wSample . weight Molar mass + NaCl (s) + NaCl (s) 2 NaHCO3 (s)
Background image of page 4
4. Get moles of CO2 and H2O lost NaHCO3 (s) ½ Na2CO3 (s) +
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 15

11pGravimetricNaHCO3 - Final Exercise 105 points...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online