Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN: 9781285199047
Author: John W. Moore, Conrad L. Stanitski
Publisher: Cengage Learning
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Chapter 3, Problem 94QRT

(a)

Interpretation Introduction

Interpretation:

  C6H8O6(aq) + Br2(aq)  2 HBr(aq) + C6H6O6(aq)

1.00g Chewable vitamin C tablet requires 27.85 mL of 0.102M Br2 to reacts completely.

The step for the mass in grams of vitamin C in the tablet is incorrect has to be identified.

Concept introduction:

Number of moles can be calculated by using following formula,

  No.of Moles  = MassMolarmass

The Molarity of the solution can be calculated by using following formula

  Molarity of the solution=NumberofmolesofsoluteVolumeofsolutioninlitre

(a)

Expert Solution
Check Mark

Explanation of Solution

The reaction is shown below,

  C6H8O6(aq) + Br2(aq)  2 HBr(aq) + C6H6O6(aq)

1.00g Chewable vitamin C tablet requires 27.85 mL of 0.102M Br2 to reacts completely.

According to the balanced equation, 1 moles of citric acid (C6H8O6) reaction with one moles of Br2 gives two mole of hydrogen bromide and one moles of C6H6O6. Therefore,

Step 1:

Given,

  n (Br2) = (27.85 mL)(0.102 mol/L)

Moles of Br2 is calculated as follows,

    MolesofBr2=27.85 mL×1L1000mL×0.102 mol1LMolesofBr2=2.84×10-3mol

Step 1 is incorrect answer, because the conversion of mL to litter is missing.

Step 2:

Given,

  n (C6H8O6) = (2.84 mol Br2) × (1 mol C6H8O61 mol Br2)

Moles of C6H8O6 is calculated as follows,

    Molesof C6H8O6 = (2.84×10-3mol) × (1 mol C6H8O61 mol Br2)Molesof C6H8O6 = 2.84×10-3mol

Step is 2 is incorrect because, number of moles of bromine is wrong. Hence Step is 2 is incorrect.

Step 3:

Given,

  m (C6H8O6) = (2.84 mol C6H8O6)×(176 g/mol C6H8O6)

Moles of C6H8O6 is 2.84×10-3mol

    m (C6H8O6) = 2.84×10-3mol×176.1238 g C6H8O61 mol C6H8O6m (C6H8O6) = 0.5 g C6H8O6

Step is 3 is incorrect because, moles of C6H8O6 is wrong. Hence Step is 3 is incorrect.

Step 4:

Given,

  m (C6H8O6) = (500. g C6H8O6)(1 g tablet)

Step is 4 is incorrect because, mass in grams of C6H8O6 is too large, hence it is wrong. Therefore, Step is 4 is incorrect.

Over all, step 1, step 2, step 3 and step 4 are incorrect answer.

(b)

Interpretation Introduction

Interpretation:

The correct result has to be determined.

Concept introduction:

Refer to part (a)

(b)

Expert Solution
Check Mark

Explanation of Solution

The reaction is shown below,

  C6H8O6(aq) + Br2(aq)  2 HBr(aq) + C6H6O6(aq)

1.00g Chewable vitamin C tablet requires 27.85 mL of 0.102M Br2 to reacts completely.

According to the balanced equation, 1 moles of citric acid (C6H8O6) reaction with one moles of Br2 gives two mole of hydrogen bromide and one moles of C6H6O6. Therefore,

Moles of Br2 is calculated as follows,

    MolesofBr2=27.85 mL×1L1000mL×0.102 mol1LMolesofBr2=2.84×10-3mol

Moles of C6H8O6 is calculated as follows,

    Molesof C6H8O6 = (2.84×10-3mol) × (1 mol C6H8O61 mol Br2)Molesof C6H8O6 = 2.84×10-3mol

The mass of C6H8O6 is calculated as follows,

    m (C6H8O6) = 2.84×10-3mol×176.1238 g C6H8O61 mol C6H8O6m (C6H8O6) = 0.5 g C6H8O6

The correct result is that the mass of C6H8O6 is 0.5 g.

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Chapter 3 Solutions

Chemistry: The Molecular Science

Ch. 3.4 - Prob. 3.5CECh. 3.4 - Look back through the discussion of electrolytes...Ch. 3.4 - Prob. 3.8PSPCh. 3.4 - Prob. 3.9PSPCh. 3.4 - Write a balanced equation for the reaction of...Ch. 3.4 - Prob. 3.6ECh. 3.4 - Prob. 3.7ECh. 3.4 - Prob. 3.8ECh. 3.4 - Prob. 3.9CECh. 3.4 - Prob. 3.10CECh. 3.5 - Prob. 3.11CECh. 3.5 - Prob. 3.12CECh. 3.5 - Prob. 3.13ECh. 3.5 - Prob. 3.11PSPCh. 3.5 - Prob. 3.12PSPCh. 3.5 - Prob. 3.14CECh. 3.6 - Prob. 3.15CECh. 3.6 - Prob. 3.16ECh. 3.6 - Prob. 3.13PSPCh. 3.6 - Prob. 3.17ECh. 3.6 - Prob. 3.14PSPCh. 3.7 - Prob. 3.15PSPCh. 3.7 - Using the same reaction, calculate the mass of...Ch. 3.7 - At high temperatures, silicon dioxide reacts with...Ch. 3.7 - Urea is used as a fertilizer because it can react...Ch. 3.8 - Assume the methanol synthesis has an 85.0% yield...Ch. 3.8 - Prob. 3.19PSPCh. 3.8 - Prob. 3.19ECh. 3.8 - Prob. 3.20ECh. 3.9 - Phenol is a compound of carbon, hydrogen, and...Ch. 3.9 - Calcium carbonate forms carbon dioxide and calcium...Ch. 3.10 - Prob. 3.20PSPCh. 3.10 - Prob. 3.23ECh. 3.10 - Prob. 3.24ECh. 3.10 - Prob. 3.25CECh. 3.10 - Describe how you would prepare each solution. 1.00...Ch. 3.10 - Prob. 3.26ECh. 3.10 - Prob. 3.22PSPCh. 3.10 - Prob. 3.27CECh. 3.11 - Prob. 3.23PSPCh. 3.11 - Prob. 3.24PSPCh. 3.11 - Sodium chloride is used in intravenous solutions...Ch. 3.12 - Show that the reaction of KMnO4 with H2O2 is a...Ch. 3.12 - Prob. 3.25PSPCh. 3 - Aqueous solutions of ammonium sulfide and...Ch. 3 - In a blast furnace at high temperature, iron(III)...Ch. 3 - What information does a balanced chemical equation...Ch. 3 - Prob. 2QRTCh. 3 - Prob. 3QRTCh. 3 - Prob. 4QRTCh. 3 - Prob. 5QRTCh. 3 - Prob. 6QRTCh. 3 - When asked, “What is the limiting reactant?” you...Ch. 3 - Prob. 8QRTCh. 3 - Prob. 9QRTCh. 3 - For this reaction, fill in the table with the...Ch. 3 - Prob. 11QRTCh. 3 - Prob. 12QRTCh. 3 - This diagram shows A (blue spheres) reacting with...Ch. 3 - Prob. 14QRTCh. 3 - Prob. 15QRTCh. 3 - Prob. 16QRTCh. 3 - Prob. 17QRTCh. 3 - Prob. 18QRTCh. 3 - Prob. 19QRTCh. 3 - Balance these equations. (a) UO2(s) + HF() UF4(s)...Ch. 3 - Prob. 21QRTCh. 3 - Prob. 22QRTCh. 3 - Prob. 23QRTCh. 3 - Balance these combustion reactions. (a) C6H12O6 +...Ch. 3 - Prob. 25QRTCh. 3 - Prob. 26QRTCh. 3 - Prob. 27QRTCh. 3 - Which substance conducts electricity when...Ch. 3 - Prob. 29QRTCh. 3 - Predict whether each compound is soluble in water....Ch. 3 - Prob. 31QRTCh. 3 - Which drawing is the best nanoscale representation...Ch. 3 - If aqueous solutions of potassium carbonate and...Ch. 3 - If aqueous solutions of potassium sulfide and...Ch. 3 - Prob. 35QRTCh. 3 - Prob. 36QRTCh. 3 - Prob. 37QRTCh. 3 - Prob. 38QRTCh. 3 - Prob. 39QRTCh. 3 - Prob. 40QRTCh. 3 - Prob. 41QRTCh. 3 - Prob. 42QRTCh. 3 - Prob. 43QRTCh. 3 - Prob. 44QRTCh. 3 - Prob. 45QRTCh. 3 - Prob. 46QRTCh. 3 - Prob. 47QRTCh. 3 - Prob. 48QRTCh. 3 - Prob. 49QRTCh. 3 - Prob. 50QRTCh. 3 - Prob. 51QRTCh. 3 - Prob. 52QRTCh. 3 - Prob. 53QRTCh. 3 - Prob. 54QRTCh. 3 - Prob. 55QRTCh. 3 - Prob. 56QRTCh. 3 - Prob. 57QRTCh. 3 - Prob. 58QRTCh. 3 - Nitrogen monoxide is oxidized in air to give brown...Ch. 3 - Prob. 60QRTCh. 3 - The final step in the manufacture of platinum...Ch. 3 - Disulfur dichloride, S2Cl2, is used to vulcanize...Ch. 3 - Prob. 63QRTCh. 3 - Prob. 64QRTCh. 3 - Prob. 65QRTCh. 3 - Prob. 66QRTCh. 3 - Prob. 67QRTCh. 3 - Cisplatin, Pt(NH3)2Cl2, a drug used in the...Ch. 3 - Aluminum chloride, Al2Cl6, is an inexpensive...Ch. 3 - Prob. 70QRTCh. 3 - Prob. 71QRTCh. 3 - Prob. 72QRTCh. 3 - Prob. 73QRTCh. 3 - Quicklime, CaO, is formed when calcium hydroxide...Ch. 3 - Prob. 75QRTCh. 3 - Disulfur dichloride, which has a revolting smell,...Ch. 3 - Prob. 77QRTCh. 3 - Prob. 78QRTCh. 3 - Quinone, which is used in the dye industry and in...Ch. 3 - l-Dopa is a drug used for the treatment of...Ch. 3 - Write the balanced chemical equation for the...Ch. 3 - Prob. 82QRTCh. 3 - Prob. 83QRTCh. 3 - Prob. 84QRTCh. 3 - Prob. 85QRTCh. 3 - Prob. 86QRTCh. 3 - You need 300. mL of 0.500-M K2Cr2O7. Which method...Ch. 3 - You need to make a 0.300-M solution of NiSO4(aq)....Ch. 3 - You wish to make a 0.200-M solution of CuSO4(aq)....Ch. 3 - Prob. 90QRTCh. 3 - Prob. 91QRTCh. 3 - You mix 25.0 mL of 0.234-M FeCl3 solution with...Ch. 3 - A soft drink contains an unknown mass of citric...Ch. 3 - Prob. 94QRTCh. 3 - Prob. 95QRTCh. 3 - Potassium hydrogen phthalate, KHC8H4O4, is used to...Ch. 3 - Prob. 97QRTCh. 3 - Prob. 98QRTCh. 3 - Prob. 99QRTCh. 3 - Prob. 100QRTCh. 3 - Boron forms an extensive series of compounds with...Ch. 3 - Prob. 102QRTCh. 3 - Prob. 103QRTCh. 3 - Prob. 104QRTCh. 3 - Prob. 105QRTCh. 3 - Azurite is a copper-containing mineral that often...Ch. 3 - Prob. 107QRTCh. 3 - Prob. 108QRTCh. 3 - Vitamin C is ascorbic acid, HC6H7O6, which can be...Ch. 3 - Prob. 110QRTCh. 3 - Prob. 111QRTCh. 3 - Prob. 112QRTCh. 3 - Prob. 113QRTCh. 3 - Prob. 114QRTCh. 3 - Prob. 115QRTCh. 3 - Prob. 116QRTCh. 3 - Prob. 117QRTCh. 3 - Prob. 118QRTCh. 3 - Prob. 119QRTCh. 3 - Prob. 120QRTCh. 3 - Ammonia can be formed by a direct reaction of...Ch. 3 - Carbon monoxide burns readily in oxygen to form...Ch. 3 - Prob. 123QRTCh. 3 - Write a balanced chemical equation that represents...Ch. 3 - A student set up an experiment for six different...Ch. 3 - A weighed sample of a metal is added to liquid...Ch. 3 - Prob. 127QRTCh. 3 - Prob. 128QRTCh. 3 - Each box represents a tiny volume in an aqueous...Ch. 3 - Consider the chemical reaction 2 S + 3 O2 → 2 SO3....Ch. 3 - Prob. 131QRTCh. 3 - Prob. 132QRTCh. 3 - Prob. 133QRTCh. 3 - Prob. 134QRTCh. 3 - Prob. 135QRTCh. 3 - Prob. 136QRTCh. 3 - Prob. 137QRTCh. 3 - Prob. 138QRTCh. 3 - Prob. 139QRTCh. 3 - Prob. 140QRTCh. 3 - Prob. 141QRTCh. 3 - Prob. 142QRTCh. 3 - In a reaction, 1.2 g element A reacts with exactly...Ch. 3 - Prob. 144QRTCh. 3 - When solutions of silver nitrate and sodium...Ch. 3 - Nickel metal reacts with aqueous silver nitrate in...Ch. 3 - Prob. 147QRTCh. 3 - Prob. 148QRTCh. 3 - Prob. 149QRTCh. 3 - Prob. 150QRTCh. 3 - A mountain lake that is 4.0 km × 6.0 km with an...Ch. 3 - Prob. 152QRTCh. 3 - Prob. 153QRTCh. 3 - Prob. 154QRTCh. 3 - Prob. 155QRTCh. 3 - Ethanol, C2H5OH, is a gasoline additive that can...Ch. 3 - Prob. 157QRTCh. 3 - Prob. 3.ACPCh. 3 - Prob. 3.BCPCh. 3 - Prob. 3.DCPCh. 3 - Prob. 3.ECPCh. 3 - Prob. 3.FCPCh. 3 - Prob. 3.GCP
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