Quiz_ Acids, Bases, and Salts

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Schoolcraft College *

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104

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Chemistry

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Jan 9, 2024

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Question 60.5/0.5 Final Grade: 0.5 points out of 0.5 points possible Which of the following is or are true statement(s) about acids and bases? Choose all that apply. Hide answer choices Correct: Acids have hydronium ion concentrations greater than the hydronium ion concentrations in basic solutions. Correct answer The pH of an acid solution must be greater than 7. A strong acid has a pH close to 7. Every Bronsted-Lowry acid is also an Arrhenius acid. Feedback Correct. Question 70.5/0.5 Final Grade: 0.5 points out of 0.5 points possible Which of the following is an incorrect relationship between hydronium ion concentration, pH, and acidity/basicity? Hide answer choices When the [H 3 O + ] = 1.0 x 10 -7 , the pH is 7 and the substance is neither acidic nor basic. When the [H 3 O + ] = 1.0 x 10 -8 , the pH is 8 and the substance is weakly basic. When the [H 3 O + ] = 1.0 x 10 -13 , the pH is 13 and the substance is strongly basic. Correct: When the [H 3 O + ] = 1.0 x 10 -2 , the pH is 2 and the substance is weakly acidic. Correct answer Feedback Correct.

Question 80.5/0.5 Final Grade: 0.5 points out of 0.5 points possible Which of the following is the most correct statement when referring to the following chemical equation? Hide answer choices Correct: This equation describes a general property of acids as presented in this course. Correct answer This equation describes a general property of bases as presented in this course. This equation describes a general property of salts as presented in this course. This equation has no relationship to acids, bases or salts. Feedback Correct! Question 90.5/0.5 Final Grade: 0.5 points out of 0.5 points possible Which is the best description of how burning coal contributes to acid rain? Hide answer choices During the process of burning coal, acids are released into the atmosphere and are precipitated during rain storms. Correct: During the process of burning coal, nonmetal oxides are produced which react with the moisture in our atmosphere and sometimes the oxygen as well to produce acid rain. Correct answer By-products of coal fired power plants include metal oxides which combine with the moisture in our atmosphere to produce acid rain.

The salts in the coal react with the bases in the coal to produce materials that are slightly acidic. When these materials are then released to the atmosphere they combine with the moisture to produce acid rain. Feedback Correct. Question 100.5/0.5 Final Grade: 0.5 points out of 0.5 points possible Which of the following is a reaction showing the properties of a basic anhydride? Hide answer choices Correct: Correct answer Feedback Correct.

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