Chemistry: Water and Solution Chemistry 2, assignment help

QUESTION 1

  1. Bases are able to cancel an acid’s properties.

2 points

QUESTION 2

  1. A substance is added to pure water and the concentration of aqueous H+ ions increases. What kind of substance has been added to the water?

3 points

QUESTION 3

  1. Which of the following definitions of acids and bases focuses on the transfer of the H+ particle?
    I. Arrhenius
    II. Brønsted -Lowry
    III. Lewis

3 points

QUESTION 4

  1. Which formula is a Brønsted-Lowry base and a Lewis base, but not an Arrhenius base?

3 points

QUESTION 5

  1. Which observable evidence indicates that a base completely dissociates in water?

3 points

QUESTION 6

  1. The most likely pH for hydrochloric acid secreted from the stomach lining to help break down food is:

3 points

QUESTION 7

  1. What is the pH of a solution containing a 1.0 x 10−4 M solution of HCl?

3 points

QUESTION 8

  1. The [OH] of a given solution = 1.0 x 10−9 M. What is this solution’s pOH?

3 points

QUESTION 9

  1. Match each common acid or base with its correct formula.

    NaOHRead Answer Items for Question 9
    HNO3Read Answer Items for Question 9
    NH3Read Answer Items for Question 9
    HC2H3O2Read Answer Items for Question 9
    H2SO4Read Answer Items for Question 9
    H2SO3Read Answer Items for Question 9
    Ca(OH)2Read Answer Items for Question 9
    Answer

    A. Sulfurous Acid
    B. Ammonia
    C. Sulfuric Acid
    D. Calcium Hydroxide
    E. Nitric Acid
    F. Acetic Acid
    G. Sodium Hydroxide

    A neutralization reaction is the reaction between an acid and its conjugate base.
    TRUE
    FALSE
    2 points Save Answer
    QUESTION 2
    A neutral salt is formed by which type of reaction?
    strong acid-weak base
    strong acid-strong base
    weak acid-strong base
    weak acid-weak base
    3 points Save Answer
    QUESTION 3
    Which is always true of a salt?
    shows both acidic and basic properties
    creates a neutral pH in solution
    is an ionic compound formed from an acid-base reaction
    can react with an acid but not with a base
    3 points Save Answer
    QUESTION 4
    A net ionic equation does not show ions that are common to both reactants and products.
    TRUE
    FALSE
    2 points Save Answer
    QUESTION 5
    The net ionic equation, H3PO4 (aq) + 3 OH− (aq) Imported Asset PO4−3 (aq) + 3 H2O (l), best represents which type of acid-base reaction?
    strong acid-strong base
    weak acid-strong base
    strong acid-weak base
    weak acid-weak base
    3 points Save Answer
    QUESTION 6
    Which is the correct net ionic equation for the following reaction: 2HI (aq) + Ca (OH)2 (aq) Imported Asset CaI2 (aq) + H2O (l)?
    H+ (aq) + Ca+2 (aq) + 2 I− (aq) Imported Asset CaI2 (aq)
    Ca+2 (aq) + 2 OH− (aq) Imported Asset Ca(OH)2 (aq)
    H+ (aq) + OH− (aq) Imported Asset H2O (l)
    2HI (aq) + Ca (OH)2 (aq) Imported Asset CaI2 (aq) + H2O (l)
    3 points Save Answer
    QUESTION 7
    When choosing which indicator to use in a titration reaction, you should consider:
    what color you would like to see at the end point of the titration
    the relative strengths of the acid and base you are using in the titration
    how long the titration will take to complete
    adjusting the end point of the titration to better match your indicator
    3 points Save Answer
    QUESTION 8
    When added to a solution, a buffer can:
    indicate when the equivalence point has been reached in a titration
    lower the pH of the solution below 1
    neutralize either a small amount of acid or base added to the solution
    prevent the pH of the solution from changing
    3 points Save Answer
    QUESTION 9
    Buffers can resist pH change by providing a weak base to neutralize added acid.
    TRUE
    FALSE
    2 points Save Answer
    QUESTION 10
    Match the acid base pairs by arranging the acid name with the conjugate base formula.
    Hydrogen carbonate
    Read Answer Items for Question 10
    Hydrogen phosphate
    Read Answer Items for Question 10
    Carbonic acid
    Read Answer Items for Question 10
    Water
    Read Answer Items for Question 10
    Sulfuric acid
    Read Answer Items for Question 10
    Phosphoric acid
    Read Answer Items for Question 10
    Answer
    A.
    HSO4-
    B.
    H2PO4-
    C.
    PO43-
    D.
    HCO3-
    E.
    OH-
    F.
    CO32-
 
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