Analía Bellizzi – Chemistry Classes

Ronald Reagan Senior High School

Acids and Bases Study Guide

 

ACIDS AND BASES REVIEW QUESTIONS

You can use the PRE AICE book to answer the following questions. Work will be collected at the end of the period. DO NOT WASTE YOUR TIME.

1. Observe the following picture and answer the questions below:

    1. Write the word equation for the reaction that takes place in the flask. [1]
    2. Which is the gas released by the reaction?[1]
    3. Write the symbol equation for the reaction[2]
    4. Indicate what would be observed in the test tube with lime-water?[1]
    5. Which type of reaction occurs in the flask?[1]

TOTAL [6] 

2. Observe the following picture and answer the questions below:

    1. Write the word equation for the reaction that takes place in the flask [1]
    2. Which is the gas produced by the reaction? [1]
    3. Which product will remind dissolved in the flask after the reaction? [1]
    4. Which color would the solution turn? [1]
    5. Which is the purpose of the test tube with lime-water on the right of the flask? [1]

TOTAL  [4]

3. Observe the picture below. Dilute sulphuric acid is reacting with the metal (magnesium) in the conical flask.

acid + metal

    1. Which is the gas released into the measuring cylinder [1]
    2. why is the measuring cylinder upside down? [1]
    3. write the balanced chemical equation for the reaction that takes place in the flask [2]
    4. what color will the resulting solution be? [1]
    5. if you release acid slowly into the metal and stop just when the reaction with Magnesium ended, which would the pH of the solution be? [1]
    6. Explain why you chose the answer in 6 [1]

TOTAL [7]

4. Complete the following generic chemical equations.

    1. acid + metal  [1]
    2. Show an example [1]
    3. acid + metal oxide [1]
    4. Show an example [1]
    5. acid + Hydroxide[1]
    6. Show an example [1]
    7. acid + metal carbonate[1]
    8. Show an example [1]

total [8]

5. Calcium metal reacts with Hydrochloric acid.

    1. write a word equation for the reaction [1]
    2. write a balanced chemical equation [2]
    3. what changes in color – if any will you notice? [1]
    4. what would you see in the flask? [1]
    5. how can you prove the presence of the gas? [1]

TOTAL [6].

6. Magnesium sulfate (MgSO4) is the chemical name for EPSON SALTS. It can be prepared in the laboratory by neutralizing the base Magnesium Oxide (MgO) .

    1. Which acid should be used to make Epson Salts? [1]
    2. Write a balanced equation for the reaction [2]
    3.  The acid is completely dissociated. Which term describes this type of acid? [1]
    4. Which ion, formed in water, causes the “acidity” of the acids? [1]
    5. What is a base? [1]
    6. Write an ionic equation that shows the ion O-2 acting as a base. [1]

TOTAL [7]

7. Aspirin is 2-ethanoyloxybenzoic acid, an organic acid which is soluble in water.

    1. what effect will aqueous solution of aspirin have on litmus paper? [1]
    2. Do you think aspirin si a strong acid or a weak acid? [1]
    3. explain why you think so. [1]
    4. what would you expect to see when baking soda  is added to an aqueous solution of aspirin? [1]
    5. What would you expect to see if you put a piece of magnesium metal in the aspirin aqueous solution? [1]

TOTAL [5]

8. Give examples of the uses of acids and bases in the following situations

    1. cooking [1]
    2. cleaning [1]
    3. treatment of insects stings [1]
    4. indigestion [1]
    5. waste water treatment [1]
    6. soil treatment: Give the commercial and chemical name of the compound we use to treat soil acidity,. If you do not have those available, give the commercial and chemical name of other two compounds that can be used as well. [2]

TOTAL [7]

GRANDTOTAL 50 POINTS