Acid,Bases and Salts

Question 1

what is an acid?

Answer 1

substance that can donate H+ ions

Question 2

what does a metal + acid produce?

Answer 2

salt + hydrogen (thus efferevesence will be seen)
this is a redox reaction

Question 3

what does a metal carbonate + acid produce?

Answer 3

salt+water + co2
this is a neutralisation reaction

Question 4

what does metal hydroxides + acids form?

Answer 4

salt + h20
this is a neutralisation reaction

Question 5

what does metaloxide + acid form?

Answer 5

salt and water
neutralisation reaction

Question 6

what is a strong acid?

Answer 6

undergoes full dissociation in water

Question 7

what is a weak acid?

Answer 7

acid that only slightly dissociates
carboxylic acids are weak acids

Question 8

higher conc. of H+ ions means?

Answer 8

lower pH and more acidic the solution is

Question 9

What is the difference between a change of 1 in the pH scale?

Answer 9

a factor of 10

Question 10

what are mono,di,tri protic acids

Answer 10

one mole of substance being able to donate more than one mole of H+

eg: diprotic acids like sulfuric acid can donate 2 acidic H+ per acid molecule

Question 11

What is a base?

Answer 11

substance that can accept H+ ions or has the ability to form OH- ions

Question 12

what type of reaction occurs when an acid reacts with a base?

Answer 12

neutralisation

Question 13

what type of reaction is neutralisation?

Answer 13

exothermic - releases heat to surroundings