Thursday, December 27, 2018

'Analysis of an Antacid\r'

' analytic thinking of an Antacid In this lab tarradiddle we exit discuss the results of the ‘Determining the al just about Effective Antacids’ lab. In this lab we tried different stains of antagonistics to find out which will be the most effective at neutralizing acids. We will test this by see how much drops of hydrochloric acid (HCl) are unavoidable to compensate a certain keep down of the antacid. Antacids are expenditured to go heartburn. We sometimes use them to treat this because antacids are a mild base that can neutralize acids in our stomachs, such as HCl.The propose of this lab is to see how well separately antacid neutralize hydrochloric acid. Procedure: 1. get down twain burets, one for use with the HCl and others for use with the NaOH. 2. Record the exact groynearity as they appear on the stock bottles. 3. dress the mass of each of you antacid domiciliations. 4. appropriate 25 mL of HCl solution into the Erlenmeyer flask, and and then a dd one of the antacid birth control pills to the flask. 5. act as the solution to a boil to circularize any undissolved CO2. 6. Add two or three drops of an indicator to our antacid mixture. 7.Titrate antacid mixture with the NaOH solution until we assume reached the end point of the indicator used. mussiness anovulant| VHCl| Vinitial NaOH| Vfinal NaOH| # jettyes HCl change 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| honest x? = 0. 008092 mol/g ? (x? †x) 2 = 5. 102298*10-5 Standard Division = SD = ± ? x- x 2n-1 = ±0. 0029161 A brand name| Tums| Safeway| Safeway| Phillips| Tums| Safeway| ActiveIngredient| CaCO3| CaCO3| CaCO3| Mg(OH)2| CaCO3| CaCO3| G active voice ingredient from battle| 0. 5 g| 0. 5 g| 0. 5 g| 0. 311 g| 0. 5 g| 0. 5 g| expectd gActive ingredient| 0. 911 g| 0. 3718 g| 0. 3548 g| 0. 392 g| 0. 285 g| 0. 15 g| #moles HCl neutralized by active 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| appeal / g| 4. 3835 ? /g| 7. 35 ? /g| 7. 50 ? /g| 17. 83 ? /g| 14. 011 ? /g| 5. 16 ? /g| scrape = Safeway regular strength Cost = $ 3. 99 #tablets = 150 g active ingredient = 500 mg each tablet Ingredient = (active) calcium carbonate, (inactive) corn starch, crospovidone, dextrose, flavor, atomic number 12 stearate, maltodextrin, sucrose, talc. CaCO3 (s) + 2HCl (aq) > CaCl2 (aq) + H2O (l) + CO2 (g) Calculation: 1.Calculate moles HCl neutralized by antacid per gram tablet: (Total moles HCl †moles HCl neutralized by NaOH) / mass of tablet Total moles HCl = Moles HCl neutralized by NaOH = 2. Calculate grams active ingredient: 3. Calculate speak to/gram: Based on the results, although Phillips brand was expensive, it was the most effective antacid. This is because it neutralized the most moles of HCl per gram of antacid. The active ingredient in this antacid is Magnesium Hydroxide. As the result, I prefer to buy Phillips antacid to resist heartburn. Chemical Equation: Mg (OH) 2 + HCl Cl (OH) 2 + MgH\r\n'

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