Chem unit 10

Question 1

Acid pH

Answer 1

below 7

Question 1

base pH

Answer 1

above 7

Question 2

nuetral pH

Answer 2

7

Question 3

are acids sour/bitter

Answer 3

sour

Question 4

TRUE/FALSE: bases are bitter and chalky

Answer 4

true

Question 5

Do acids react with metal/carbonates?

Answer 5

YES-
acids react with metals —> H2 gas
acids react with carbonates —> CO2

Question 6

Arrhenius def of acids

Answer 6

produces H+/H30+ in water

Question 7

Bronsted Lowry def of acids

Answer 7

proton donor

Question 8

Litmus paper turns ______ when reacting with acids

Answer 8

red

Question 9

phth turns _____ when reacting with acids

Answer 9

colorless

Question 10

Litmus paper turns _____ when reacting with bases

Answer 10

blue

Question 11

arrhenius def of a base

Answer 11

produces OH- in water

Question 12

bronsted lowry def of a base

Answer 12

proton acceptor

Question 13

phth turns _____ when reacting with a base

Answer 13

pink

Question 14

What are indicators used for?

Answer 14

used to determine when enough acid/base is added to neutralize the original solution

Question 15

will weak acids and conjugate bases have the same color?

Answer 15

NO- weak acids will have one color while the conjugate base will have another

Question 16

Strong acids or bases dissociate ____ (completely/partially)

Answer 16

completley

Question 17

weak acids or bases dissociate ______ (completely/partially)

Answer 17

partially (under 10%)

Question 18

When do you use a double arrow in an equation?

Answer 18

when there is a WEAK acid/base dissociating

Question 19

TRUE/FALSE- use an ice table to determine the pH / M of a strong acid/base

Answer 19

FALSE- use pH/poH equation

Question 20

what is the pH/poH equation?

Answer 20

-log [H+/OH-}
(H+/OH- = molarity of acid/base)

Question 21

how to find the M/pH of a weak acid/base

Answer 21

ICE TABLES

Question 22

kw equation

Answer 22

ka x kb = kw

Question 23

pH + poH = ?

Answer 23

14

Question 24

kw or [H+][OH-] is equal to what?

Answer 24

1.0 x 10^-14

Question 25

what is neutralization?

Answer 25

acid + base ---> water + salt

Question 26

what is the name of a substance that can act as an acid or a base depending on the situation

Answer 26

amphoteric ex. water

Question 27

List of strong acids

Answer 27

HCL HI HBr HNO3 H2SO4 HClO4

Question 28

list of strong bases

Answer 28

NaOH KOH Ba(OH)2 LiOH Ca(OH)2 Sr(OH)2

Question 29

list of weak acids

Answer 29

HC2H3O2 HF HCN H2S H3PO4

Question 30

list of weak bases

Answer 30

NH3 NH4OH CH3NH2 C5H5N

Question 31

how to find the pH from [H+]

Answer 31

-log[H+]

Question 32

how to find [H+] from pH

Answer 32

10^(-H+)

Question 33

are acids and bases both conductors?

Answer 33

yes

Question 34

what is a conjugate acid

Answer 34

what the Base becomes after the reaction

Question 35

what is the conjugate base

Answer 35

what the ACID becomes after the reaction

Question 36

are acids/bases both electrolytes?

Answer 36

yes

Question 37

what is the purpose of a titration lab?

Answer 37

Determine the molarity of an acid by titrating it with a standard solution/base

Question 38

what is the equivalence point?

Answer 38

Molarity of acid = molarity of base [H+] = [OH-]

Question 39

what is an end point?

Answer 39

when indicator changes color

Question 40

when do you use MaVa=MbVb in titration lab or stoich to determine Molarity of acid??