acids and bases

Question 1

definition of acid

Answer 1

an acid is a substance that produces hydrogen ions, h+, in an aqueous solution

Question 2

what does HCL gas exist as?

Answer 2

simple molecules

Question 3

what is a dibasic acid

Answer 3

the acid produces 2 hydrogen ions , 2H+, in aqueous solution.

Question 4

what is a mono basic acid?

Answer 4

the acid produces 1 hydrogen ion, h+ in aqueous solution.

Question 5

how do acids taste like?

Answer 5

sour

Question 6

what is the colour does the litmus paper turn in acids?

Answer 6

red.

Question 7

metal + acid =

Answer 7

salt + hydrogen gas(

Question 8

what is the sound when hydrogen extinguishes a lighted splint?

Answer 8

a ‘pop’ sound.

Question 9

lead appears to be un reactive to hydrochloric acid and sulfuric acid. why?

Answer 9

lead reacts with hydrochloric acid and sulfuric acid to form an insoluble layer of lead chloride and lead sulfide respectively. this prevents the acid from further reacting with.

Question 10

acid + carbonate =

Answer 10

salt + water + carbon dioxide + water

Question 11

base + acid =

Answer 11

salt + water

Question 12

what is a strong acid?

Answer 12

an acid that is fully ionised in aqueous solution.

all acid molecules dissociate to form ions.

Question 13

what is a weak acid?

Answer 13

a weak acid is an acid that is only partially ionised in an aqueous solution.
only a few acid molecules ionises in aqueous solutions.

Question 14

which acid ionizations are reversible?

Answer 14

ionisation in weak acids