Final Review Ch. 20 (Part 2) – Flashcards
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| Which hydroxide compound yields the lowest concentration of hydroxide ions in aqueous solution? A. sodium hydroxide B. potassium hydroxide C. calcium hydroxide D. magnesium hydroxide |
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| D. magnesium hydroxide |
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| What is an acid according to Bronsted? |
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| A substance that is a hydrogen ion donor. |
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| Which compound can act as both a Bronsted-Lowry acid and a Bronsted-Lowry base? |
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| water |
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| What is a conjugate acid made from? |
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| a Bronsted-Lowry base |
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| What is the term used to describe a substance that can be both an acid and a base? |
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| amphoteric |
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| According to the Bronsted-Lowry theory, water ______. A. acts as a base when it acceprs a hydrogen ion B. can be neither an acid nor a base C. can act as an acid by accepting hydrogen ions D. can accept but not donate hydrogen ions |
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| A. acts as a base when it acceprs a hydrogen ion |
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| What is the acid disocciation constant of a weak acid if a concentration of 0.3M gives a hydrogen ion concentration of 0.001M? |
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| 3 x 10^-6 |
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| What is the concentration of acid if the hydrogen-ion concentration is 0.001M and the acid dissociation constant is 0.000 000 1? |
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| 10^-1 M |
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| The acid disocciation constant for an acid dissolved in water is equal to the ______. |
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| equilibrium constant times the concentration of water. |
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| What is the value for the acid disocciation constant for a weak acid? |
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| less that 0.001 |
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| Which ionization constant is the largest for phosphoric acid? |
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| the first |
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| Which base has the smallest base disocciation constant? A. potassium hydroxide B. sodium hydroxide C. calcium hydroxide D. ammonia |
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| D. ammonia |
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| Which acid can be concentrated but is always weak? A. acetic acid B. hydrochloric acid C. nitric acid D. Sulfuric acid |
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| A. acetic acid |
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| Which of the following pairs consists of a weak acid and a strong base? A. sulfuric acid, sodium hydroxide B. acetic acid, ammonia C. acetic acid, sodium hydroxide D. nitric acid, calcium hydroxide |
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| C. acetic acid, sodium hydroxide |
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| Classify each as strong or weak and then as acid or base: SA, SB, WA, WB A. sulfuric acid B. Sodium hydroxide C. acetic acid D. ammonia |
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| A. SA B. SB C. WA D. WB |
