Exam 3/ chapters 7 and 8
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Which is NOT a characteristic of acids? | show 🗑
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| Lemon juice has a sour taste and turns litmus to red. Lemon juice is | show 🗑
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| Which of the following acids is responsible for the sour taste of yogurt? | show 🗑
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| show | taste bitter
reacts with acids to form salts
produce hydroxide ions when added to water
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| show | an acid-base indicator
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| show | Acids are defined as compounds that produce OH- ions in water solution
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| H3O+ is the | show 🗑
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| show | acids are proton donors
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| show | H2SO4
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| All of the following are bases EXCEPT A) KOH. B) HNO3. C) NH3. D) Ba(OH)2. | show 🗑
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| show | transfer of protons
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| show | electrolyte
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| show | Biodiesel fuels are converted to methyl esters, while soaps are converted to sodium salts
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| When added to water, which of the following would produce a base? | show 🗑
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| show | SO2
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| show | SO3
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| show | acidic anhydride
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| Which is a weak base in aqueous solution? | show 🗑
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| The same number of moles of acetic acid and hydrogen chloride are placed in beakers containing water. After this addition, the beaker with the HCl has more hydronium ions than the beaker with added acetic acid. HCl is classified as | show 🗑
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| show | 100% of the maximum number of possible hydronium ions
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| Ammonia is classified as a weak base in water. This means that it produces | show 🗑
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| When an aqueous solution containing hydrochloric acid is just neutralized with an aqueous solution containing sodium hydroxide, the solution would taste | show 🗑
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| Give an example of an amphiprotic compound | show 🗑
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| In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, HNO3, the coefficient of nitric acid is | show 🗑
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| show | Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O
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| Phenolphthalein has often been used to monitor the progress of acid-base neutralization reactions. What color will phenolphthalein be if there is an excess of base present? | show 🗑
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| A sample of rainwater has a pH of 3.5. What ion is sure to be present in relatively large concentration in this rain sample? | show 🗑
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| A solution with a pH of 3 has a hydronium ion concentration of | show 🗑
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| If a solution has a pH of 6, what is the pOH? | show 🗑
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| show | strongly basic
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| show | base
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| show | lemon juice
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| If the concentration of a dilute solution of potassium hydroxide is 0.001 M, what is the pH of that solution? | show 🗑
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| Which of the following form a conjugate acid-base pair? | show 🗑
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| show | proton
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| A mixture of a weak acid and its conjugate base forms a(n) | show 🗑
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| show | coal-burning power plants
lightning
volcanic eruptions
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| show | 1.5
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| Sodium bicarbonate is commonly known as | show 🗑
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| show | calcium carbonate
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| show | alkalosis
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| Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of the following would be best to dissolve the deposit? | show 🗑
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| show | lye
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| show | A strong base will break down or "denature" the protein in the fish
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| show | Reduction is the gain of hydrogen
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| show | CO2 + H2O
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| In which of the following is the reactant undergoing oxidation? (Note: These reactions are not complete chemical equations.) | show 🗑
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| In which of the following is the reactant undergoing reduction? (Note: These reactions are not complete chemical equations.) | show 🗑
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| show | Iron
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| show | an oxidation reaction
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| The black, granular material that fills a dry cell in a common flashlight (between the carbon rod and the zinc shell) is manganese(II) oxide, MnO2. The oxidation number of manganese in MnO2 is | show 🗑
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| show | 0
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| Sodium bisulfite converts bromine (Br2) to bromide (Br-). Sodium bisulfite is a(n) | show 🗑
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| show | H2O2
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| In the following reaction, hydrogen is the ________. CuO + H2 → Cu + H2O | show 🗑
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| Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II) ions. In the plating reaction, copper II ions | show 🗑
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| Silver is plated on copper by immersing a piece of copper into a solution containing silver ions. In the plating reaction, copper | show 🗑
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| show | electrical energy
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| show | rechargeable
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| show | zinc-air
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| show | PbO2
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| Consider the following reaction: 2 Fe + 3 Mg2+ → 2 Fe3+ + 3 Mg The half-reaction for the reduction in this reaction is | show 🗑
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| The removal of silver tarnish from silverware using aluminum foil and a solution of electrolyte is an example of | show 🗑
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| show | aluminum develops a coating of aluminum oxide, which protects it from further reaction
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| Which of the following statements about the rusting of iron is true? | show 🗑
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| show | oxidation-reduction
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| show | Nitroglycerin
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| show | oxygen
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| show | 4
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| This compound is a powerful oxidizing agent and a harmful pollutant; yet a layer of it in the upper stratosphere serves as a shield from harmful ultraviolet radiation from the sun. | show 🗑
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| show | an antioxidant
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| show | disinfect the water
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| Benzoyl peroxide, used in the treatment of acne, is | show 🗑
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| show | as antiseptics
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| An oxidizing agent that was used in older versions of the Breathalyzer test is | show 🗑
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| Which substance is a common reducing agent used in the production of metals from ores? | show 🗑
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| The chemical basis of converting light into a photographic silver image is based on the fact that | show 🗑
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| show | no silver metal
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| show | A catalyst is used up when it catalyzes a reaction
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| show | chlorine
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| show | reducing agents found in foods
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| Which of the following is NOT true of hydrogen? | show 🗑
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| Human cells obtain energy by | show 🗑
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| show | water
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