Unit 9 - Acids & Bases Flashcards Preview

LHS Chemistry > Unit 9 - Acids & Bases > Flashcards

Flashcards in Unit 9 - Acids & Bases Deck (21):
1

Strong Acid

Completely dissociates.

2

Weak Acid

Weak acids are not fully ionized or dissociated.

3

 

Properties of Acids

 

Sour

4

 

Properties of Bases

 

Bitter and slippery

5

 

Acids

 

Electron acceptors.

 

Yeild H+ Ions in solution.

 

H+ donor.

6

Bases

Electron donator.

Yeilds OH- in solution.

H+ Ion acceptor.

7

 

NEUTRALIZATION REACTION

 

When an acid and base react in solution to form salt and water.

8

 

Titration

 

The process of adding a known amount of solution of known concentration to determine the concentration of another solution.

9

 

Products of an acid/base reaction

Salt + Water

10

 

STANDARD SOLUTION

 

Solution of known concentration

11

 

END POINT

 

When the indicator changes color.

12

 

Titration Curve

13

 

Amphoteric

 

Acid or Base

14

pH, pOH, [H+], [OH-] Calculation Road Map

15


pH Scale

pH = (-) log [H+]

pOH = - log [OH-]

pH + pOH = 14

[H+] = 2nd Log (-) pH

[OH-] = 2nd Log (-) pOH

[H+] [OH-] = 1E-14

16


If the [H+] =1E-5 in a Coca-Cola what is the concentration of  [OH-]?  Is the solution acidic, basic, or neutral?

[H+] [OH-] = 1E-14

[OH-] = (1E-14) / ([H+])

[OH-] = (1E-14) / (1E-5)

[OH-] = 1E-9

The solution is acidic because 1E-5 is less than 1E-7.

 

 

17


Determine the conjugate acid/base pairs.

 

NH3 + H2O ---> NH4+  + OH-

18

Hydronium Ion

[H+]

19

Hydroxide Ion

[OH-]

20

How would you calculate the pH of a solution with a hydronium concentration of 1E-5 M?

pH = -log 1E-5 =5

21

Calculate the pH of a solution with a Hydronium ion concentration of 1.3E-9 M

pH= -log(1.3E-9) =8.89