Q&A Hero

Q: Octane is a seven-carbon linear alkane.

Q: Octane is a seven-carbon continuous chain alkane.

Q: The name of this alkane is pentane.

Q: Pentane contains six carbon atoms.

Q: Most prescription drugs are organic molecules.

Q: Organic compounds can only be made by living things because a "vital force" is needed for their creation.

Q: Most organic compounds are flammable.

Q: Organic compounds are always highly water soluble.

Q: The bond angles in a tetrahedral molecule are 90.

Q: Methane has a tetrahedral structure.

Q: Carbon has six valence electrons.

Q: There are millions of organic compounds.

Q: Organic chemistry is the study of the chemistry of carbon compounds.

Q: What is the name of the compound below? A) 1-chlorotoluene B) 2-chlorotoluene C) 3-chlorotoluene D) 4-chlorotoluene E) 5-chlorotoluene

Q: All of the carbon-carbon bonds in benzene are A) composed of only two types, single and double. B) identical. C) double bonds. D) single bonds. E) circular bonds.

Q: What is the molecular formula of benzene? A) C6H4 B) C6H6 C) C6H8 D) C6H10 E) C6H12

Q: The compound below is named A) cyclohexane. B) cyclohexene. C) cyclohexyne. D) benzene. E) cyclobenzene.

Q: A compound that contains the ring structure of benzene is called a(n) A) alkane. B) cycloalkane. C) alkyl group. D) aromatic compound. E) hydrocarbon.

Q: The structural formula of benzene is often represented as a A) ring of five carbon atoms. B) ring of six carbon atoms with six double bonds. C) ring of six carbon atoms with a circle in the center. D) cycloalkane. E) cycloalkyne.

Q: Which of the following would result from the polymerization of ethene?

Q: What is the starting monomer for the polymer Teflon? F F F F | | | | - C - C - C - C - | | | | F F F F A) F | F - C - F | F B) F | H - C - H | F C) F F | | F - C - C - F | | F F D) C F E) F F | | F - C C - F

Q: Small molecules that make up the repeat unit in polymers are called A) monomers. B) alkenes. C) alkynes. D) minipolymers. E) synthetic polymers.

Q: Long-chain molecules that consist of many repeating units are called A) polymers. B) monomers. C) organic compounds. D) alkenes. E) alkanes.

Q: What is the major product of the reaction shown below?CH3- CH2- CH = CH2 + HOH A) B) C) CH3 - CH2 - CH2 - CH2 OHD) E)

Q: The reaction of an alkene and water in the presence of an acid catalyst to produce an alcohol is called A) hydrolysis. B) alkoholysis. C) halogenation. D) hydration. E) hydrohydration.

Q: Identify the following as acids, bases, or neutral solutions. A) neutral B) acid C) base 1> has a sour taste 2> has a pH = 4.5 3> turns blue litmus paper red 4> contains more hydronium ions than hydroxide ions 5> H2O 6> [H3O+] = 3.4 x 10-5 M 7> [OH-] = 2.8 x 10-2 M 8> Ca(OH)2 9> pH =9.0 10> [H3O+] = 1.0 x 10-7 M

Q: In the following solutions, is the [OH-] greater than, less than, or equal to the [H3O+]? A) less than B) greater than C) equal to 1> acid 2>) base 3> [H3O+] = 1.0 x 10-6 M 4> [H3O+] = 1.0 x 10-10 M 5> [H3O+] = 1.0 x 10-7 M 6> pH = 2 7> pH = 9

Q: Identify each of the following compounds as an acid, a base, or neither. A) acid B) base C) neither 1> HCl 2> NaOH 3> NH3 4> H2SO4 5> CO32- 6> NaCl 7> CN- 8> H2CO3

Q: A buffer is a solution that tends to maintain a neutral pH.

Q: Alkalosis is the blood condition in which the blood pH is higher than normal.

Q: If the carbon dioxide level in the blood is too high, more carbonic acid is produced, and this results in the condition termed acidosis.

Q: For most reactions of acids with bases, the resulting products are a salt and water.

Q: Magnesium metal is not attacked by sulfuric acid solutions.

Q: A solution with a pH of 4.0 is basic.

Q: A solution with a pH of 4.0 is more acidic than a solution with a pH of 6.0.

Q: The pH of 0.001 M HCl is 12.0.

Q: In any water solution, [H3O+][OH-] = 1.0 x 10-7.

Q: A strong acid is completely dissociated in water.

Q: HCl is a strong acid.

Q: The conjugate base of HCl is Cl-.

Q: HCl is hydrochlorous acid.

Q: What is the pH of a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate?

Q: A student had 25.0 mL of 0.100 M H2SO4 solution. How many mL of a 0.100 M NaOH solution will the sulfuric acid neutralize?

Q: A student had 2.0 L of a sodium hydroxide solution that had a concentration of 0.4000 M. The student needed to make 500 mL of a 0.1000 M solution. How many mL of the concentrated solution was needed?

Q: In a titration experiment, a student used 24.13 mL of 0.111 M sodium hydroxide to neutralize 20.00 mL of a hydrochloric acid solution. What was the molarity of the acid solution?

Q: The pH of 0.0001 M KOH is ________.

Q: The pH of 0.0010 M HCl is ________.

Q: If an acid has a Ka << 1, is it classified as a weak acid or a strong acid?

Q: Write the proper Ka expression for the ionization of acetic acid, HC2H3O2.

Q: Identify the conjugate acid-base pairs in the following reaction:HCl + NH3 -> NH4+ + Cl-

Q: The conjugate acid of H2PO42- is ________.

Q: The name of HCl is________.

Q: Which solution has the lowest pH? A) a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate B) a buffer made with 0.10 M acetic acid and 0.10 M sodium acetate C) a buffer made with 0.01 M acetic acid and 0.10 M sodium acetate D) a buffer made with 0.01 M acetic acid and 0.01 M sodium acetate E) All of the buffers have the same pH since they are all made with acetic acid and sodium acetate.

Q: Which solution has the highest pH? A) a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate B) a buffer made with 0.10 M acetic acid and 0.10 M sodium acetate C) a buffer made with 0.01 M acetic acid and 0.10 M sodium acetate D) a buffer made with 0.01 M acetic acid and 0.01 M sodium acetate E) All of the buffers have the same pH since they are all made with acetic acid and sodium acetate.

Q: When hyperventilation (rapid breathing) causes a patient to exhale large amounts of CO2, the blood pH rises in a condition called A) metabolic acidosis. B) metabolic alkalosis. C) respiratory acidosis. D) respiratory alkalosis. E) pulmonary distress.

Q: If a condition of hyperventilation occurs, the blood pH of the patient is expected to A) saturate. B) increase. C) decrease. D) stay the same. E) concentrate.

Q: What is the name of the medical condition of an asthmatic patient with a blood pH of 7.30? A) respiratory acidosis B) respiratory alkalosis C) metabolic acidosis D) metabolic alkalosis E) diabetes mellitus

Q: Which of the following could be a buffer? A) NaF B) HF + NaF C) HF + H2O D) NaF + H2O E) NaCl + HF

Q: Which of the following is a buffer system? A) NaCl and NaNO3 B) HCl and NaOH C) H2CO3 and KHCO3 D) NaCl and NaOH E) H2O and HCl

Q: In a buffer system of HF and its salt, NaF, A) the HF neutralizes added acid. B) the HF neutralizes added base. C) the HF is not necessary. D) the F- neutralizes added H2O. E) the F- neutralizes added base.

Q: The normal blood pH is about A) 6.8. B) 7.0. C) 7.2. D) 7.4. E) 7.6.

Q: For the problem that follow, consider the reaction in which magnesium reacts with an HCl solution .Mg(s) + 2HCl(aq) -> MgCl2 (aq) + H2(g)The function of a buffer is toA) change color at the end point of a titration.B) maintain the pH of a solution.C) be a strong base.D) maintain a neutral pH.E) act as a strong acid.

Q: For the problem that follow, consider the reaction in which magnesium reacts with an HCl solution .Mg(s) + 2HCl(aq) -> MgCl2 (aq) + H2(g)If 2.00 g of Mg reacts completely with 50.0 mL of HCl solution, what is the molarity of the HCl solution?A) 1.65 MB) 80.0 MC) 8.00 MD) 0.823 ME) 3.29 M

Q: How many milliliters of 0.100 M Ba(OH)2 are required to neutralize 20.0 mL of 0.250 M HCl? A) 100. mL B) 50.0 mL C) 25.0 mL D) 0.250 mL E) 0.50 mL

Q: How many milliliters of 0.200 M NaOH are required to completely neutralize 5.00 mL of 0.100 M H3PO4? A) 7.50 mL B) 2.50 mL C) 0.833 mL D) 5.00 mL E) 15.0 mL

Q: How many milliliters of 0.400 M NaOH are required to completely neutralize 20.0 mL of 0.200 M HCl? A) 50.0 mL B) 40.0 mL C) 0.100 mL D) 20.0 mL E) 10.0 mL

Q: A 10.0 mL of 0.121 M H2SO4 is neutralized by 17.1 mL of KOH solution. The molarity of the KOH solution is A) 0.207 M. B) 0.4141 M. C) 0.0708 M. D) 0.428 M. E) 0.142 M.

Q: A 25.0 mL sample of H2SO4 requires 20.0 mL of 2.00 M KOH for complete neutralization. What is the molarity of the acid?H2SO4 + 2KOH -> K2SO4 + 2H2OA) 2.00 MB) 2.50 MC) 0.800 MD) 1.60 ME) 1.25 M

Q: A 25.0 mL sample of H3PO4 requires 50.0 mL of 1.50 M NaOH for complete neutralization. What is the molarity of the acid?H3PO4 + 3NaOH -> Na3PO4 + 3H2OA) 0.333 MB) 3.00 MC) 1.50 MD) 1.00 ME) 0.750 M

Q: What is the molarity of a KOH solution if 25.0 mL neutralizes 35.0 mL of a 0.200 M HCl solution? A) 0.267 M B) 0.143 M C) 0.200 M D) 0.280 M E) 0.100 M

Q: 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is A) 0.212 M. B) 0.115 M. C) 0.500 M. D) 0.390 M. E) 0.137 M.

Q: Which of the following is a neutralization reaction?A) KCl + NaNO3-> KNO3 + NaClB) HNO3+ KOH -> H2O + KNO3C) H2O + SO3-> H2SO4D) 4Na + O2-> 2Na2OE) 2NO2-> 2NO + O2

Q: In a neutralization reaction, how many moles of HClO4 react with 1 mole of Al(OH)3? A) 1 B) 2 C) 3 D) 4 E) 5

Q: How many moles of H2O are produced when 1 mole of Mg(OH)2 reacts with 1 mole of H2SO4? A) 1 B) 2 C) 3 D) 4 E) 5

Q: The neutralization reaction between Al(OH)3 and HNO3 produces the salt with the formula A) H2O. B) AlNO3. C) AlH2. D) Al(NO3)3. E) NO3OH.

Q: Which of the following is the correctly balanced equation for the complete neutralization of H3PO4 with Ca(OH)2?A) H3PO4 + Ca(OH)2-> CaHPO4 + 2H2OB) 3H3PO4 + Ca(OH)2 -> Ca3(PO4)2 + 5H2OC) H3PO4 + Ca(OH)2-> Ca3(PO4)2+ H2OD) 2H3PO4 + 3Ca(OH)2-> Ca3(PO4)2 + 6H2OE) 4H3PO4 + 6Ca(OH)2-> 2Ca3(PO4)2 + 12H2O

Q: In a neutralization reaction A) two acids react to form water. B) water and a salt react to form an acid and a base. C) an acid and a salt react to form water and a base. D) a base and a salt react to form water and an acid. E) an acid and a base react to form a salt and water.

Q: An acid and base react to form a salt and water in a(n) ________ reaction. A) ionization B) dissociation C) oxidation D) neutralization E) reduction

Q: When a piece of magnesium metal is added to hydrochloric acid, what gas is produced? A) oxygen B) chlorine C) nitrogen D) carbon dioxide E) hydrogen

Q: The [OH-] of a solution with pH = 8.34 is A) 5 x 10-9 M. B) 4.6 x 10-9 M. C) 2.2 x 10-9 M. D) 3 x 10-6 M. E) 2.2 x 10-6 M.