“Patience and tenacity of purpose are worth more than twice their weight of cleverness.” ~Thomas Henry Huxley
Name: ______Date: ______
8.3 What is a neutralization reaction? ADPHS Instructor Ms. Kasia Room 109
UNIT 8: ACIDS AND BASES
8.3 Independent Practice
“Patience and tenacity of purpose are worth more than twice their weight of cleverness.” ~Thomas Henry Huxley
Directions: Work with a partner or individually to complete these by the end of class.
3.1 What is pH?
1. A hydrogen ion, H+, in aqueous solution may also be written as
(1) H2O (2) H3O+ (3) H2O2 (4) OH-
2. As the pH of a solution is changed from 3 to 6, the concentration of hydronium ions
(1) increases by a factor of 3 (2) increases by a factor of 1000
(3) decreases by a factor of 3 (4) decreases by a factor of 1000
3. The compound NaOH(s) dissolves in water to yield
(1) hydroxide ions as the only negative ions (2) hydroxide ions as the only positive ions
(3) hydronium ions as the only negative ions (4) hydronium ions as the only positive ions
4. Three bottles of liquids labeled 1, 2, and 3 were found in a storeroom. One of the liquids is known to be drain cleaner. Drain cleaners commonly contain KOH or NaOH. The pH of each liquid at 25°C was determined with a pH meter. The table below shows the test results.
Explain how the pH results in this table enable a student to correctly conclude that bottle 3 contains the drain cleaner.
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3.2 What is a Neutralization Reaction?
1. Which type of reaction occurs when equal volumes of 0.1M HCl and 0.1M NaOH are mixed?
(1) oxidation
(2) reduction
(3) hydrolysis
(4) neutralization
2. Which products are formed when an acid reacts with a base?
(1) an alcohol and carbon dioxide
(2) an ester and water
(3) a soap and glycerin
(4) a salt and water
3. Which compound is a salt?
(1) Na3PO4
(2) H3PO4
(3) CH3COOH
(4) Ca(OH)2
4. Sulfuric acid, H2SO4 (aq), can be used to neutralize barium hydroxide, Ba(OH)2 (aq). What is the formula for the salt produced by this neutralization?
(1) BaS
(2) BaSO2
(3) BaSO3
(4) BaSO4
5. Soil pH can affect the development of plants. For example, a hydrangea plant produces flowers when grown in acidic soil but pink flowers when grown in basic soil. Evergreen plants can show a yellowing of foliage, called chlorosis, when grown in soil that is too basic.
Acidic soil can be neutralized by treating it with calcium hydroxide, Ca(OH)2, commonly called slaked lime. Slaked lime is slightly soluble in water.
a) Write an equation, using symbols or words, for the neutralization of the ions in acidic soil by the ions released by slaked lime in water.
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