nt in the sample. Complete the fol calculated values with the correct number of

Question

nt in the sample. Complete the fol calculated values with the correct number of si of significant the amount of antacid prese a. A commercial antacid was analyzed to determine the analysis.(See Report Sheet) Record calculated vas figures. A. Dissolving the Antacid 0.204 Part C. 3. Mass of antacid sample (8) 4. Total volume of HCI added (mL) 5, Molar concentration of HCI (mow B. Analyzing the Antacid Sample Pa 1. Molar concentration of NaOH (mVL) 2. Buret reading, initial (mL) 3. Buret reading, final (mL) 4. Volume of NaOH added (mL) 0902 10.60 C. Calculations Part C.3 1. Moles of HCI added, total (mol) Show calculation. 2. Moles of NaOH added (mol) 3. Moles of base in antacid sample (mol) 4. mol base in antacid (mol/k) Show calculation. Part C.4 Show calculation mass of antacid sample Show calculation. b. For Trials 2 and 3, the mol base in antacid a. What is the average mass of antacid sample _ were 8.22 × 10-3 and 1.05 × 10-2 respectively. mass of antacid sample mol base in antacidmple?

Explanation / Answer

Moles of HCl total = molar concentration x volume in lts = 0.0978 x 0.025 = 0.002445 moles

Moles of NaOH = 0.0902 X (10.6-3.85/100) = 0.00060885

moles of base in antacid sample after neutralisation with HCl = 0.002445 - 0.00060885 = 0.00183615

moles of base in antacid/mass of anatcid sample = 0.00183615 /0.204 = 0.00900 of antacid sample

For trial 2 and 3 : 0.00822 and 0.0105

average of trial 1,2 and 3 = (0.009+0.00822+0.0105)/3 = 0.00924 of antacid sample

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