Analysis of an Antacid

Analysis of an Acrid In this lab address we will altercate the after-effects of the ‘Determining the Best Able Antacids’ lab. In this lab we activated altered brands of antacids to acquisition out which will be the best able at acrid acids. We will analysis this by seeing how abundant drops of hydrochloric acerbic (HCl) are appropriate to abrogate a assertive bulk of the antacid. Antacids are acclimated to abide heartburn. We sometimes use them to amusement this because antacids are a balmy abject that can abrogate acids in our stomachs, such as HCl. The purpose of this lab is to see how able-bodied anniversary acrid abrogate hydrochloric acid. Procedure: 1. Obtain two burets, one for use with the HCl and others for use with the NaOH. 2. Record the exact molarity as they arise on the banal bottles. 3. Determine the accumulation of anniversary of you acrid tablets. 4. Dispense 25 mL of HCl band-aid into the Erlenmeyer flask, and again add one of the acrid tablets to the flask. 5. Bring the band-aid to a abscess to allay any undissolved CO2. 6. Add two or three drops of an indicator to our acrid mixture. 7. Titrate acrid admixture with the NaOH band-aid until we accept accomplished the end point of the indicator used. Accumulation tablet| VHCl| Vinitial NaOH| Vfinal NaOH| #moles HCl abortive By antacid/ g tablet| x? - x| ( x? - x )2| 1. 29 g| 25 mL| 0 mL| 18 mL| 0. 0055961 mol/g| 0. 0024959| 6. 22952*10-6| 1. 221 g| 25 mL| 0 mL| 17 mL| 0. 0067452907 mol/g| 0. 00134671| 1. 8136*10-6| 1. 24 g| 25 mL| 0 mL| 18. 9 mL| 0. 005083629 mol/g| 0. 003| 9. 050296*10-6| 1. 273 g| 25 mL| 0 mL| 16. 2 mL| 0. 00714 mol/g| 9. 52*10-4| 9. 063*10-7| 1. 289 g| 25 mL| 0 mL| 15. 2 mL| 0. 0078 mol/g| 2. 2*10-4| 8. 5264*10-8| 1. 248 g| 25 mL| 0 mL| 10. 6 mL| 0. 01185 mol/g| -0. 003758| 1. 412*10-5| 1. 29 g| 25 mL| 0 mL| 9. 3 mL| 0. 01243 mol/g| -0. 00434| 1. 8818*10| Average x? = 0. 008092 mol/g ? (x? - x) 2 = 5. 102298*10-5 Standard Division = SD = ± ? x- x 2n-1 = ±0. 0029161 A cast name| Tums| Safeway| Safeway| Phillips| Tums| Safeway| ActiveIngredient| CaCO3| CaCO3| CaCO3| Mg(OH)2| CaCO3| CaCO3| G alive additive from battle| 0. 5 g| 0. 5 g| 0. 5 g| 0. 311 g| 0. 5 g| 0. 5 g| Calculated gActive ingredient| 0. 911 g| 0. 3718 g| 0. 3548 g| 0. 392 g| 0. 285 g| 0. 15 g| #moles HCl abortive by alive ingredient/g tablet| 0. 00587 mol| 0. 0060 mol/g| 0. 00709 mol/g| 0. 01345 mol/g| 0. 00648 mol/g| 0. 0081 mol/g| Cost / g| 4. 3835 ? /g| 7. 35 ? /g| 7. 50 ? /g| 17. 83 ? /g| 14. 011 ? /g| 5. 16 ? /g| Cast = Safeway approved backbone Cost = $ 3. 99 #tablets = 150 g alive additive = 500 mg anniversary book Additive = (active) calcium carbonate, (inactive) blah starch, crospovidone, dextrose, flavor, magnesium stearate, maltodextrin, sucrose, talc. CaCO3 (s) + 2HCl (aq) > CaCl2 (aq) + H2O (l) + CO2 (g) Calculation: 1. Calculate moles HCl abortive by acrid per gram tablet: (Total moles HCl – moles HCl abortive by NaOH) / accumulation of book Total moles HCl = Moles HCl abortive by NaOH = 2. Calculate grams alive ingredient: 3. Calculate cost/gram: Based on the results, although Phillips cast was expensive, it was the best able antacid. This is because it abortive the best moles of HCl per gram of antacid. The alive additive in this acrid is Magnesium Hydroxide. As the result, I adopt to buy Phillips acrid to abide heartburn. Chemical Equation: Mg (OH) 2 + HCl Cl (OH) 2 + MgH

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