swers Best A Experiment 17 Report Sheet Antacid Analysis Date??18lab See.???None

Question

swers Best A Experiment 17 Report Sheet Antacid Analysis Date??18lab See.???None Lon Trial I o.07 Desk No. A. Dissolving the Antacid 1. Mass of flask (8) 2. Mass of flask+ antacid sample (g) 3. Mass (or tared mass) of antacid Trial 2 Trial I Trial 2 er 6 sample (g) 4. Total volume of HCl added (mL.) 5. Molar concentration of HCI (moV/L) o. B. Analyzing the Antacid Sample 1. Molar concentration of NaOH (moVL) 2. Buret reading, initial (mL) 3. Buret reading. final (mL) 4. Volume of NaOH (mL.) C. Calculations 1. Moles of HCI added, total (mol) 2. Moles of NaOH added (mol) 3. Moles of base in antacid sample (mol) mol base inantacid_ (mol/s) mass of antacid samples 4. in antacid-' (mol/g) cid sa Show calculations) for Trial(s) 1 on the next page.

Explanation / Answer

1. Moles of HCl added = Concentration x Volume

Trial 1: 0.1 mol/L x 0.025 L = 0.0025 moles

Trial 2: 0.0025 moles

2. Moles of NaOH added = Concentration x Volume

Trial 1: 0.1 mol/L x 0.015 L = 0.0015 moles

Trial 2: 0.1 mol/L x 0.013 L = 0.0013 moles

3. Moles of base in antacid sample = Moles of HCl - Moles of NaOH

Trial 1: 0.0025 - 0.0015 = 0.001 moles

Trial 2: 0.0025 - 0.0013 = 0.0012 moles

4. Mole base in antacid / mass of antacid sample

Trial 1: 0.001/0.15 = 0.00667 mol/g

Trial 2: 0.0012/0.2 = 0.006 mol/g

5. Average Mole base in antacid / mass of antacid sample

= (0.00667+0.006)/2 = 0.006335 mol/g

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