A 0.125 g sample of a monoprotic acid (HX, one proton/H+) of an unknown molecular weight is dissolved in water and titrated with 0.1003 M KOH.  The endpoint is reached after adding 20.77 mL of base.  What is the molecular weight of the unknown acid? HX (aq) + KOH (aq) → H2O (l) + KX(aq)

Q: A buffer is prepared using acetic acid, CH3COOH, (a weak acid, pK = 4.75) and sodium acetate,…

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Q: 25.0 mL of 2.8 M NH3(aq) was added to 20.0 mL of 1.5 M HCl(aq) and the mixture was stirred, then…

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Q: What is the molarity of a 12.46 mL sulfuric acid solution of 18.22 mL of 0.100 M potassium hydroxide…

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Q: You prepared 500 mL buffer solution that contains 0.50 moles monoprotic weak acid (HA) and 0.30…

A: (a) Given data contains, The number of moles of monoprotic weak acid is 0.50mol. The number of moles…

Q: 8. Propanoic acid (CH₂CH₂COOH, which we simplify to HPr) is a carboxylic acid whose salts are used…

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Q: Ag+ (aq) + NH3(aq) Ag(NH3)*(aq) Ag(NH3)* (aq) + NH3(aq) → Ag(NH3)2* (aq) Equal volumes of 0.1…

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Q: A student is asked to standardize a solution of calcium hydroxide. He weighs out 0.952 g potassium…

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Q: a) Select the most consistent trials and calculate the average volume of titrant added. b) Calculate…

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Q: 30.00 mL portion of 0.225 M hydrochloric acid is titrated with Ca(OH)2 of unknown concentration. It…

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Q: It takes 38.65 ml of a 0.0895 M hydrochloric acid solution to reach the equivalence point in the…

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Q: If you start with a solid acid that can be dissolved in water, you can determine the molar mass of…

A: Given that : Mass of acid = 0.447  Volume of water = 10 mL = 0.01 L Volume of base (NaOH) = 18.57 mL…

Q: It takes 38.65 ml of a 0.0895 M hydrochloric acid solution to reach the equivalence point in the…

A: Number of moles of HCl  = 0.03865 L × 0.0895 mol/L  = 0.003459 mol  2HCl(aq) + Ba(OH)2(aq) -->…

Q: 5.0-mL sample of 0.100M HCl(aq) is titrated with 0.125M NaOH. How many milliliters of NaOH will be…

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Q: 24. A buffer is prepared using acetic acid, CH3COOH, (a weak acid) and sodium acetate, CH3COONa…

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Q: A student performs a titration using a standardized sodium hydroxide solution of 0.8755 M.  A volume…

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Q: Using the following reaction, H2SO4 (aq)  +   2 NaOH (aq)     Na2SO4 (aq) +  2 H2O (l) calculate…

A: The given reaction is, H2SO4 (aq) + 2 NaOH (aq) → Na2SO4 (aq) + 2 H2O (l) Volume of NaOH = 14.92 mL…

Q: In a titration it takes 14.22 mL of Fe(OH)3 to reach the endpoint when added to 20.0 mL of HCl.  If…

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Q: In a different titration experiment, it took 17.59 mL of a 0.198 M solution of NaOH to titrate 20.00…

A: From equation mole of HCl and mole of NaOH is equal

Q: A buffer solution made from nitrous acid and sodium nitrite was titrated with hydrochloric acid.…

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Q: A student performs a titration between 10.0 mL of a 0.25 M weak acid HA(aq) (Ka = 2.45 x 10 −5) and…

A: GIVEN: Volume of weak acid, HA =10.0 mL  Concentration of weak acid, HA = 0.25 M Ka = 2.45 x 10 −5…

Q: 6. a) What is the pH of pure water at 35.0 °C? At this temperature Kw = 2.042 x 10-14. b) Based on…

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Q: A student titrates a 10.00-mL sample of an HCI solution, using a 0.365 M solution of NaOH. She finds…

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Q: In a different titration experiment, it took 26.48 mL of a 0.155 M solution of NaOH to titrate 20.00…

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Q: 1.15 g of an unknown triprotic acid (H3A) is titrated with 2.50 M KOH. It takes 35.5 mL of KOH to…

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Q: Calculate the concentration of the barium hydroxide

A: Volume of HCl = 23.55 mL     = 23.55/1000 = 0.02355 L Molarity of HCl = 0.2550 M Moles of HCl = M ×…

Q: Apparatus: Materials and Methods P1000 Gilson and blue gilson tips 3 disposable cuvettes…

A: We have to plot the graph of absorbance vs time and determine the rate of the reaction.

Q: A student prepares a dilute solution of sodium hydroxide, NaOH (aq), starting with 6 M sodium…

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Q: 6. Calculate the average from the 2 experiments for each time point. Plot your data on a graph and…

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Q: 45.02 mL of a saturated solution of iron (III) hydroxide are titrated with 0.253 M HCl.  If 3.36 mL…

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Q: A student titrates 10.0 mL of the 2.000 M HC2H3O2(aq) with an NaOH(aq) solution of unknown…

A: Three questions based on pH titration, which are to be accomplished.

Q: In a different titration experiment, it took 23.95 mL of a 0.175 M solution of NaOH to titrate 20.00…

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Q: Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to…

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A: First to calculate pH.  Then to calculate volume of HCl.

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Q: Adding acid to the buffer, NH3-NH4*, will produce this (net ionic) reaction: H*(aq)+OH(aq) =H₂O(1) O…

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Q: 7.7 g of citric acid (MM = 192.1 g/mol) can be titrated with NaOH according to the following…

A: Complete neutralization of citric acid with NaOH is shown below. H3C6H5O7(aq) + 3NaOH(aq) → 3H2O(l)…