ost-Laboratory Questions An extra strength antacid tablet contains 750 mg of active ingredient, CaCO3. If it takes 25 mL of HCl (aq) to neutralize the tablet, how strong is the acid? 2 HCI (aq) + CaCO3 (aq) → CaCl2(aq) + HOH (1) + CO2 (g) HCI CaCO2 HC! IMol 4C1.
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A: Below attached file showing the details answer. All the best.
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A: Molar mass of Al(OH)3 = 78 g/mol Molar mass of Mg(OH)2 = 58.32 g/mol Molar mass of NaHCO3 = 84.007…
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A: Answer :- 7.31 g The mass of HNO3 required to neutralize 4.30 g Ca(OH)2 = 7.31 g…
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A: Molar mass of Mg(OH)2 = 58.33 g/mol1.92g of Mg(OH)2 = 1.92/58.33 = 0.033 mole. 1 mole of Mg(OH)2…
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- Suppose i manufactured 3 litters of Acid free shampoo for bike or car washing. Now for coloring shampoo ,which coloring agents or pigments or dyes i should use for my formulation? The dyes or pigments or coloring agent should be water soluble. And please mention what percentage i should use to my 3 litters formulation? Please answer at your own words. Answer should be to the point.It is known that acid content has a major effect on theflavor of vinegars, but most cheaper vinegars are diluted similarly to 5% acidity Wt./vol. % is equivalent to gsolute per 100mL solution (so 5% is equivalent to 5 g acid/100 mL solution). a.) First, calculate the approximate molar concentration of acetic acid in the 5% wt./vol vinegar. b.) Next, calculate the expected molarity of acetic acid in the solution upon dilution by a factor of 5. Thank you!Over time, as their free fatty acid (FFA) content increases,edible fats and oils become rancid. To measure rancidity, the fator oil is dissolved in ethanol, and any FFA present is titrated withKOH dissolved in ethanol. In a series of tests on olive oil, a stocksolution of 0.050 Methanolic KOH was prepared at 25C, storedat 0C, and then placed in a 100-mL buret to titrate any oleic acid[CH₃(CH₂)₇CH=CH(CH₂)₇COOH] present in the oil. Each offour 10.00-g samples of oil took several minutes to titrate: thefirst required 19.60 mL, the second 19.80 mL, and the third and fourth 20.00 mL of the ethanolic KOH.(a) What is the apparent acidity of each sample, in terms of mass% of oleic acid? (Note:As the ethanolic KOH warms in the bu-ret, its volume increases by a factor of 0.00104/C.)(b) Is the variation in acidity a random or systematic error? Ex-plain.(c) What is the actual acidity? How would you demonstrate this?
- What happens (increase or decrease), in the system at eq≡m, to: SiO2(s) + 4HF(g) SiF4(g) + 2H2O (g) K = _____________ ___ [HF] if SiF4 is added? ___ [H2O] if SiF4 is added?___ [SiF4] if H2O is removed? ___ [HF] if H2O is removed? ___ [HF] if mass of SiO is added? ... two ways to make [SiF4] increase ? _________________ ___ mass of SiO if HF is added?What is the molar mass of a solution if 2.00g of the solute is dissolved onto 9.00g of solvent? The Kf is 4.5° C and the temp drops from 70.00° C ( pure solvent) to 65 00° C (solution). You Must show all work and include unit and you Must get answer to correct sig figs.You need to make 100 mL of 1% Atropine sulfate solution and make it isotonic with sodium chloride Atropine sulfate has a MW of 695 and is 3 ions. (E = 0.12) For 100 ml of 1% atropine sulfate we have 1 g of atropine sulfate 1: How much NaCl is the atropine sulfate equivalent to 2 How much Sodium Chloride would be needed to make 100 mL of water isotonic? 3 How much sodium chloride should be added to the 1% atropine sulfate solution to make it isotonic
- A commercial product designed to prevent cut fruit from turning brown contains a mixture of ascorbic acid (HC6H7O6) and sugar (C12H22O11). Calculate the percent (w/w) of ascorbic acid in this product if a 2.1994 g portion of this product requires 36.15 mL of 0.2328 M NaOH to reach a phenolphthalein endpoint. MM HC6H7O6: 176.12 MM NaOH: 40.00An aqueous solution containing 0.16 M of unknown base has a measured pH equal to 7.51. What is the value of pKb for the unknown base? Include 3 significant figures in the answerThallium(I) iodate (TlIO3) is only slightly soluble in water. Its Ksp at 25°C is 3.07 × 10-6 . Estimate the solubility of thallium(I) iodate in water in units of grams per 100.0 mL of water.
- 8. 39.24 mL of permanganate solution reacts with 0.241 g sodium oxalate according to the following reaction. Determine the normality for this permanganate solution. Na2C2O4 + KMnO4 + H2SO4 --> MnSO4 + CO2 + Na2SO4 + K2SO4 + H2O detirmine equivalent weight for sodium oxalate detirmine equivalents of sodium oxalateBarium chloride is reacted with sodium sulfate to produce barium sulfate and sodiumchloride. How many moles of the precipitate is produced from 0.8 moles of BaC12?A. 0.4 moleB. 0.8 moleC. 1.6 molesD. None of the above A 315mL of water was added to 2100 mL of 19M NaCI solution. What is the newconcentration of the solution?(Use the given information: MW: Na = 23 g/mol, C1 = 35g/mol)A. 2.85 MB. 2.48 MC. 18.60 MD 19.0 M 500g of Al2S3 is dissolved in H20 to make 15.0 L of solution. What is its normality? (MW:Al=27g/mol, S=32g/mol, H=1g/mol, 0=16g/molA. 0.11 NB. 0.07 NC. 0.22 ND. 0.04 NIn the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. concentration of 2ppm of iodide B. concentration of quenchers C. use of quenchers D. use of iodide