Question

in a displacement reaction a more reactive metal displaces the less reactive metal from its compound. so it is best suited to
1. Arrange the metals in order of reactivity
2. calculate the rate of reaction of metals
3. find out if two substances would react
4. none of these​

Answer 1

Answer:

1 is the answer here

Explanation:

so we can get the reactivity of the metals

Answer 2

Answer:

Explanation:

Displacement reactions

Displacement reactions involve a metal and a compound of a different metal. In a displacement reaction:

a more reactive metal will displace a less reactive metal from its compounds

Displacement reactions are easily seen when a salt of the less reactive metal is in the solution. During the reaction:

the more reactive metal gradually disappears as it forms a solution

the less reactive metal coats the surface of the more reactive metal

For example, magnesium is more reactive than copper. When a piece of magnesium is dipped into blue copper sulfate solution:

the blue colour fades as colourless magnesium sulfate solution forms

brown copper coats the surface of the magnesium

Here are the equations for the reaction:

magnesium + copper sulfate → magnesium sulfate + copper

Mg + CuSO4 → MgSO4 + Cu

No reaction is seen if you do things the other way round – in other words, if you put copper powder into magnesium sulfate solution. This is because copper is not reactive enough to displace magnesium from magnesium sulfate.