Acids Reacting With Metals

Question 1

What are the main three acids we use in chemistry ?

Answer 1

Hydrologic acid
Sufuric acid
Nitric acid

Question 2

What do all the acids contain ?

Answer 2

Hydrogen !!!
Hcl
H2SO4
HNO3

Question 3

If a metal is more reactive than hydrogen on the reactivity series, what can it do to its acid ?

Answer 3

It can displace hydrogen from acids

Question 4

When an acid reacts with a metal, what will it create?

Answer 4

Acid + metal —> Salt + Hydrogen(g)

Question 5

If a metal reacts with hydrochloric acid, what will the salt be called ?

Answer 5

Metal -chloride

Question 6

If a metal reacts with sulfuric acid, what will the salt be called ?

Answer 6

Metal- sulfate

Question 7

How does magnesium react with HYDROCHLORIC acid ?

Answer 7

It creates magnesium chloride and hydrogen
- Salt: magnesium chloride
- hydrogen gas

Question 8

How does magnesium react with NITRIC acid ?

Answer 8

Magnesium nitrate and hydrogen
- salt magnesium nitrate
- hydrogen gas

Question 9

How does magnesium react with acids, explain why ?

Answer 9

It reacts rapidly
- magnesium is more reactive than hydrogen so it can easily displace hydrogen from acids

Question 10

What does the magnesium do to the hydrogen in an acid ?

Answer 10

It displaces the hydrogen as it is more reactive than hydrogen

Question 11

1. How will zinc react with acids ?
2. Explain why ?

Answer 11

It reacts quite rapidly
- forming Zinc chloride and zinc sulfate
- zinc is more reactive than hydrogen so it can quite easily displace it from an acid

Question 12

1. How does iron react with acids?
2. Explain why ?

Answer 12

1. Reacts fairly slowly
2. Iron is slightly more reactive than hydrogen so it will be a slower reaction

Question 13

What do acids produce in aqueous solution ?

Answer 13

H+ ions

Question 14

How would HCL split in an aqueous solution ?

Answer 14

H+ ions and CL- ions

Question 15

What happens to magnesium when it reacts with hydrochloric acid ? ( in terms of oxidation and reduction)

Answer 15

Mg atom becomes a Mg2+ ion + 2e-
Magnesium is oxidized
The 2e- ions react with the 2H+ ions to form Hydrogen gas H2 so hydrogen is reduced

Question 16

How will zinc react with hydrochloric acid in terms of oxidation and reduction ?

Answer 16

Zn—- 2Zn2+ + 2e-
The zinc forms +2 ions as it is oxidized
2H+ +2E- —-> H2
The hydrogen ions are reduced to form hydrogen gas

Question 17

What is the simple way of remembering oxidation and reduction ?

Answer 17

Oxidation: atom looses electrons
Reduction: atom gains electrons

Question 18

Why will magnesium react very rapidly with dilute acids in terms of ions ?

Answer 18

It easily forms Mg2+ ions

Question 19

Why will zinc react quite rapidly with dilute acids in terms of ions ?

Answer 19

Quite easily forms Zn2+ ions

Question 20

Why does iron react slowly with dilute acids in terms of ions ?

Answer 20

It less easily forms Fe2+ ions