CHEMISTRY:MOLECULAR NATURE (LL)W/ACCESS
7th Edition
ISBN: 9781119497325
Author: JESPERSEN
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 61RQ
Name these acids: (a)
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12.
(b) A student knew that calcium hydroxide could be made by adding calcium to water.
The student added 0.00131 mol of calcium to a beaker containing about 100 cm of water.
A reaction took place as shown by the equation below,
All the calcium hydroxide formed was soluble.
Ca(s) + 2H,0(1I) → Ca(OH) (aq) + H,(g)
(D Calculate the mass of calcium that the student added.
mass of calcium =
g
(ii) Calculate the volume of hydrogen gas, in dm3, produced in this reaction at room
temperature and pressure, RTP.
volume of hydrogen gas =
dm3
(iii) The student transferred the contents of the beaker to a 250 cm3 volumetric flask and
water was added to make the solution up to 250 cm³.
Calculate the concentration, in mol dm3, of hydroxide ions in the 250 cm³ solution.
concentration =
moldm 3
4. Imagine that you are given 0.2500 g of a sample of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O). You very carefully heat the compound for an extended period of time to drive off water, after which you determine the mass of the remaining solid to be 0.1598 g.
(i) Determine whether the data given confirm the formula of the hydrate. You must
(ii) show any relevant calculations that support your answer.
A compound is composed of carbon, hydrogen, nitrogen and oxygen. When a 1.500-g sample of the compound is completely combusted, it yields 1.476 g of CO2and 0.605 g of H2O. In a separate analysis to determine nitrogen, 1.500 g of the compound is found to produce 0.313 g of N2. (a) Calculate the mass percent of each element in the compound. (b) Determine the empirical formula of the compound. (c) If the compound has a molar mass of 134 g/mol, what is the molecular formula?
Chapter 4 Solutions
CHEMISTRY:MOLECULAR NATURE (LL)W/ACCESS
Ch. 4 - Prob. 1PECh. 4 - Practice Exercise 4.2
Write equations that show...Ch. 4 - Practice Exercise 4.3 When solutions of (NH4)2SO4...Ch. 4 - Write molecular, ionic, and net ionic equations...Ch. 4 - Practice Exercise 4.5
Propanoic acid, , is only...Ch. 4 - Practice Exercise 4.6
Nitric acid, , is a strong...Ch. 4 - Prob. 7PECh. 4 - Practice Exercise 4.8 Ethylamine, a base in water,...Ch. 4 - Practice Exercise 4.9
Citric acid is the acid in...Ch. 4 - Practice Exercise 4.10
Hydrogen sulfide is...
Ch. 4 - Name the aqueous solutions of the following acids:...Ch. 4 - Using the colors of the atoms to identify the...Ch. 4 - Show that, in aqueous solutions, there is a net...Ch. 4 - Predict what occurs on mixing the following...Ch. 4 - Write the molecular, ionic, and net ionic...Ch. 4 - Write molecular, ionic, and net ionic equations...Ch. 4 - Write molecular, ionic, and net ionic equations...Ch. 4 - Prob. 18PECh. 4 - Write molecular equations for the stepwise...Ch. 4 - Practice Exercise 4.20
Knowing char salts of the...Ch. 4 - Prob. 21PECh. 4 - Prob. 22PECh. 4 - Prob. 23PECh. 4 - Prob. 24PECh. 4 - Practice Exercise 4.25 What is the molarity of a...Ch. 4 - Practice Exercise 4.26
If a reaction requires...Ch. 4 - Practice Exercise 4.27 A student measured 175 mL...Ch. 4 - Suppose you wanted to prepare 50 mL of...Ch. 4 - Practice Exercise 4.29
How many grams of are...Ch. 4 - Prob. 30PECh. 4 - Prob. 31PECh. 4 - Practice Exercise 4.32
How many milliliters of...Ch. 4 - How many milliliters of 0.0475MH3PO4 could be...Ch. 4 - Prob. 34PECh. 4 - Prob. 35PECh. 4 - In a solution of Na3PO4, the PO43 concentration...Ch. 4 - Suppose 18.4 mL of 0.100 M AgNO3 solution was...Ch. 4 - How many milliliters of 0.500 M KOH are needed to...Ch. 4 - Practice Exercise 4.39
A solution containing was...Ch. 4 - When 35.00 mL of Na2CO3 was reacted with 29.06 mL...Ch. 4 - In a titration, a sample of H2SO4 solution having...Ch. 4 - Practice Exercise 4.42
“Stomach acid” is a...Ch. 4 - A sample of a mixture containing CaCl2andMgCl2...Ch. 4 - Define: (a) solvent, (b) solute, (c)...Ch. 4 - 4.2 Describe: (a) concentrated, (b) dilute, (c)...Ch. 4 - Why are chemical reactions often carried out using...Ch. 4 - Describe what will happen if a crystal of sugar is...Ch. 4 - What is the meaning of the term precipitate? What...Ch. 4 - 4.6 Explain how a solution can be called...Ch. 4 - Why is an electrolyte able to conduct electricity...Ch. 4 - Which compounds are likely to be electrolytes and...Ch. 4 - What does it mean when we say that an ion is...Ch. 4 - Define dissociation as it applies to ionic...Ch. 4 - How can you tell that the following is a net ionic...Ch. 4 - What two conditions must be fulfilled by a...Ch. 4 - 4.13 Give two general properties of an acid. Give...Ch. 4 - 4.14 If you believed a solution was basic, which...Ch. 4 - How did Arrhenius define an acid and a base?Ch. 4 - How does ionization differ from dissociation?Ch. 4 - Which of the following undergo dissociation in...Ch. 4 - 4.18 Which of the following oxides would yield an...Ch. 4 - 4.19 What is a dynamic equilibrium? Using acetic...Ch. 4 - 4.20 Why don’t we use double arrows in the...Ch. 4 - Which of the following are strong acids?...Ch. 4 - 4.22 Which are classified as strong bases when...Ch. 4 - Methylamine, CH3NH2, reacts with hydronium ions in...Ch. 4 - A student was asked to draw the structure of the...Ch. 4 - Would the molecule shown below be acidic or basic...Ch. 4 - Explain the difference between the names of...Ch. 4 - Iodine, like chlorine, forms four oxoacids and one...Ch. 4 - Prob. 28RQCh. 4 - Explain how the two acid salts of phosphoric acids...Ch. 4 - What factors lead to the existence of a net ionic...Ch. 4 - Explain the three processes that can drive an...Ch. 4 - Silver bromide is insoluble. What does this mean...Ch. 4 - What gas is formed if HC1 is added t...Ch. 4 - What is the definition of molarity? Show that the...Ch. 4 - A solution is labeled 0.25MHCl. Construct two...Ch. 4 - When the units molarity and liter are multiplied,...Ch. 4 - 4.37 When a solution labeled is diluted with...Ch. 4 - Two bottles, A and B, are labeled...Ch. 4 - Prob. 39RQCh. 4 - Prob. 40RQCh. 4 - Describe each of the following: (a) buret, (b)...Ch. 4 - What is the function of an indicator in a...Ch. 4 - 4.43 Classify each of the following as a strong...Ch. 4 - Classify each of the following as a strong...Ch. 4 - Write equations for the dissociation of the...Ch. 4 - Write equations for the dissociation of the...Ch. 4 - Prob. 47RQCh. 4 - Prob. 48RQCh. 4 - The following equation shows the formation of...Ch. 4 - Prob. 50RQCh. 4 - Pure HClO4 is a molecular substance. In water it...Ch. 4 - Prob. 52RQCh. 4 - Pure HI is a gas at room temperature and reacts...Ch. 4 - When chloric acid reacts with water, it reacts as...Ch. 4 - Hydrazine is a toxic substance that can form when...Ch. 4 - Pyridine. C5H5N, is a fishy-smelling compound used...Ch. 4 - Nitrous acid, HNO2, is a weak acid that can form...Ch. 4 - Pentanoic acid, HC5H9O2, is found in a plant...Ch. 4 - Atmospheric carbon dioxide dissolves in raindrops,...Ch. 4 - Arsenic acid, H3AsO4, is a very toxic weak acid....Ch. 4 - 4.61 Name these acids: (a) , (b) .
Ch. 4 - 4.62 Name these acids: (a) , (b) .
Ch. 4 - Name these acids that bromine forms,...Ch. 4 - Prob. 64RQCh. 4 - For the acids in Problem 4.63, name the ions...Ch. 4 - For the acids in Problem 4.64, name the ions...Ch. 4 - Prob. 67RQCh. 4 - Write the formula for (a) permanganic acid, (b)...Ch. 4 - Name the following acid salts:...Ch. 4 - Name the following acid salts:...Ch. 4 - 4.71 Name the following oxoacids and give the...Ch. 4 - Name the following oxoacids and give the names and...Ch. 4 - Prob. 73RQCh. 4 - Prob. 74RQCh. 4 - Prob. 75RQCh. 4 - Oxalic acid, H2C2O4, is the poison in rhubarb...Ch. 4 - Prob. 77RQCh. 4 - Potassium stearate, KC18H36O2, is an effective...Ch. 4 - Use the solubility rules to decide which compounds...Ch. 4 - Predict which compounds are soluble in water. (a)...Ch. 4 - 4.81 Complete and balance the following molecular...Ch. 4 - Complete and balance the following molecular...Ch. 4 - Write the molecular, ionic, and net ionic...Ch. 4 - 4.84 Write the molecular, ionic, and net ionic...Ch. 4 - 4.85 Aqueous solutions of sodium sulfide and...Ch. 4 - If an aqueous solution of iron(III) sulfate (a...Ch. 4 - Complete and balance the following equations. For...Ch. 4 - Complete and balance the following equations. For...Ch. 4 - How would the electrical conductivity of a...Ch. 4 - How would the electrical conductivity of a...Ch. 4 - Prob. 91RQCh. 4 - Prob. 92RQCh. 4 - Sodium sulfide and hydrochloric acid react to form...Ch. 4 - Write the balanced molecular and net ionic...Ch. 4 - Explain why the following reactions take place....Ch. 4 - Prob. 96RQCh. 4 - Complete and balance the molecular, ionic, and net...Ch. 4 - 4.98 Complete and balance the molecular, ionic,...Ch. 4 - Write balanced molecular, ionic, and net ionic...Ch. 4 - 4.100 Write balanced molecular, ionic, and net...Ch. 4 - Choose reactants that would yield the following...Ch. 4 - Suppose that you wanted to prepare copper(II)...Ch. 4 - Calculate the molarity of a solution prepared by...Ch. 4 - 4.104 Calculate the molarity of a solution that...Ch. 4 - Calculate the molality of a solution prepared by...Ch. 4 - Calculate the molarity of a solution that contains...Ch. 4 - 4.107 How many milliliters of 0.265 M are needed...Ch. 4 - Prob. 108RQCh. 4 - Calculate the number of grams of each solute that...Ch. 4 - How many grams of solute are needed to make each...Ch. 4 - If 25.0 mL of 0.56 M H2SO4 is diluted to a volume...Ch. 4 - A 150 mL sample of 0.450 M HNO3 is diluted to 450...Ch. 4 - 4.113 To what volume must 25.0 mL of 18.0 be...Ch. 4 - To what volume must 50.0 mL of 1.50 MHCl be...Ch. 4 - How many milliliters of water must he added to...Ch. 4 - How many milliliters of water must be added to...Ch. 4 - 4.117 Calculate the number of moles of each of the...Ch. 4 - Calculate the number of moles of each of the ions...Ch. 4 - 4.119 Calculate the concentrations of each of the...Ch. 4 - Calculate the concentrations of each of the ions...Ch. 4 - In a solution of A12(SO4)3theAl3+ concentration is...Ch. 4 - 4.122 In a solution of concentration is 0.0556 M....Ch. 4 - How many milliliters of 0.258 M NiCl2 solution are...Ch. 4 - How many milliliters of 0.100 M NaOH are needed to...Ch. 4 - What is the molarity of an aqueous solution of...Ch. 4 - What is the molarity of an aqueous phosphoric acid...Ch. 4 - Prob. 127RQCh. 4 - 4.128 How many grams of baking soda, , are needed...Ch. 4 - How many milliliters of 0.150MFeCl3 solution are...Ch. 4 - 4.130 How many grams of cobalt(II) chloride are...Ch. 4 - Consider the reaction of aluminum chloride with...Ch. 4 - How many milliliters of ammonium sulfate solution...Ch. 4 - Suppose that 4.00 g of solid Fe2O3 is added to...Ch. 4 - Suppose 3.50 g of solid Mg(OH)2 is added to 30.0...Ch. 4 - In a titration, 23.25 mL of 0.105 M NaOH was...Ch. 4 - A 12.5 mL sample of vinegar, containing acetic...Ch. 4 - 4.137 Lactic acid, , is a monoprotic acid that...Ch. 4 - 4.138 Oxalic acid, a diprotic acid having the...Ch. 4 - A certain lead ore contains the compound PbCO3. A...Ch. 4 - An ore of barium contains BaCO3. A 1.542 g sample...Ch. 4 - If a solution of sodium phosphate (also known as...Ch. 4 - Prob. 142RQCh. 4 - Suppose that 25.0 mL of 0.440MNaCl is added to...Ch. 4 - A mixture is prepared by adding 25.0 mL of 0.185 M...Ch. 4 - Classify each of the following as a strong...Ch. 4 - Aspirin is a monoprotic acid called...Ch. 4 - In an experiment, 40.0 mL of 0.270 M barium...Ch. 4 - 4.148 How many milliliters of 0.10MHCl must be...Ch. 4 - 4.149 Write an equation for the reaction of sodium...Ch. 4 - *4.150 Magnesium sulfate forms a hydrate known as...Ch. 4 - Qualitative analysis of an unknown acid found only...Ch. 4 - *4.152 A mixture was known to contain both . To...Ch. 4 - *4.153 A 25.0 mL sample of vinegar with a density...Ch. 4 - Prob. 154RQCh. 4 - 4.155 Compare the advantages and disadvantages of...Ch. 4 - What kinds of experiments could you perform to...Ch. 4 - Describe experiments, both qualitative and...Ch. 4 - How could you check the accuracy of a 100 mL...Ch. 4 - A white substance was known to be either magnesium...Ch. 4 - A steel cylinder with a diameter of 10.0 cm and a...Ch. 4 - Suppose a classmate doubted that an equilibrium...Ch. 4 - When Arrhenius originally proposed that ions exist...Ch. 4 - Carbon dioxide is one obvious contributor to...
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