Project #1375 - Chemistry

1) According to the Arrhenius definition, an acid dissociates to produce _____________ ions.
A
B
C
D
 
2) A base is a substance that dissociates to produce __________________ ions according to Arrhenius.

 

3) In the equation below, fill in the correct symbols.  Choose from  H+  or OH- or cations/anions (EX: Na+ or Cl-)  Use coefficients when ever there is mor than one of the dissociated ions involved (EX: 2H+ or 2OH-).  

HNO3 → ______ +  NO3¯

HCl →  _______  +  _____

KOH →  K+   + _______

NaOH →  ________ +  _______

H2CO3 →  ________ +  CO32¯

Mg(OH)2  →  Mg 2+  +  _______

 

 

 

 

 

 

 

 

 

 

4) Mark only the acids. All that apply

A
B
C
D
E

 

5) Mark only the bases. all that apply

A
B
C
D
E

 

6) Mark the substances that are only salts.all that apply

A
B
C
D
E

 

7) Select the acid properties. all that apply

A
B
C
D
E
 

 

 

 

 

 

8) Indicate which are properties of bases. all that apply

A) 
B
C
D
E
 

 

 

 

 

 

9)  Write a brief comparison and contrast for acids and bases focusing on the Arrhenius definition and dissociated particles in solution. Be sure to compare by telling how they are alike and contrast by telling how they are different.

 

10) The pH of 0.0010M HNO3 is _______

Round answers to the nearest tenths place (0.1)

 

 

11)

To answer the neutralization reaction question, use the following formats:

Acid + Base →  Salt  +  Water

Do not change the font to subscript, EX for H2O you type in H2O

Enter the coefficients to balance the reaction ONLY when it is a number greater than one, EX use 2H2O, but not 1H2O.

Complete the following neutralization reaction. 

Hydrofluoric acid and potassium hydroxide

_________ +    __________  →    __________  +    __________

 

If 25mL of hydrofluoric acid is titrated to its endpoint using 18mL of a 0.25M potassium hydroxide solution, what is the concnetration of the acid?

___________M

 

 

 

12) Two pieces of the same metal, 10g and 20g, are at the same temperature. The 10g piece of metal is placed in some water and the temperature of the water increases 1oC.  If a 20g piece of the same metal is placed in the same amount of water, what would be the increase in the temperature of the water?

A)

11oC


B)

10oC


C)

20oC


D)

2oC

 

Subject Science
Due By (Pacific Time) 11/29/2012 08:00 pm
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