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Flashcards in acids/bases Deck (22):
1

acid

-sour taste
-corrosive
-turns blue litmus paper red
-reacts with H2 gas
-aqueous solutions are electrolytes
-reacts with bases to form h2o and salt (neutralization reactions)

2

strong acids

completely ionize in water (create a lot of h+)

3

ex of binary acids

HCl, HBr, HI

4

ternary acids

strong if the # of O atoms - # of H atom is greater than 2

5

weak acids

ionize only slightly in an aqueous solution
(weak if the # of O atom - # of H atom is less than 1)

6

base

a compound that produces OH- ions when dissolved in water

7

ex of bases

milk of magnesia; magnesium hydroxide
drain cleaner; sodium hydroxide

8

bases

-bitter taste
-slippery
-turn red litmus paper blue
-aqueous solution of bases are electrolytes
-reacts with acids to form H2O and salt

9

strong bases

completely ionize in water (create a lot of OH- ions)

10

weak bases

bases ionize only slightly

11

define amphoteric

water can sometimes act as a B-L acid and sometimes as a B-L base

12

what is the self-ionization of water

H2O+H2O --> H3O + OH-

13

what is pH

potential of hydrogen (in solution)

14

what does pH actually mean

potentia hydrogenii

15

ex of acids

vinegar - acetic acid
soda - phosphoric acid

16

define rate

measure of the amt of reactant of changing per unit of time

17

define collision theory

1. molecules must touch to react
2. only small fraction of collisions produce a reaction
3. particles lacking necessary kinetic energy to react will bounce apart unchanged when they collide

18

define activated complex / transition state

an unstable arrangement of atoms that forms momentarily (usually 10-13 secs) at the peak of the activation-energy barrier

19

define activation energy

collisions must have enough energy to produce the reaction, must be equal or exceed the activation energy which is the minimum energy needed to react

20

results of collision theory

-forming of new products
-reformation of reactants

21

factors that affect reaction rate

-temperature
-surface area
-concentration
-presence of catalyst
-increased number of particles

22

define dynamic equilibrium

the rate of the forward reaction = the rate of the reverse reaction. Means both products / reactants will be present at a given point in time. May favor either products / reactants