Question

2.b) Magnesium and dilute hydrochloric acid react to produce magnesium chloride solution and hydrogen.

Mg(s)+2HCl(aq)MgCl→MgCl₂(aq)+H₂(g)

State two observations that could be made during the reaction

Answer 1

Step-by-step explanation:

Here are two observations that could be made during the reaction:

The magnesium metal will fizz and dissolve. This is because the hydrogen gas is being released, which causes the magnesium metal to fizz and dissolve.

A gas will be produced. This gas is hydrogen gas, which is colorless and odorless. It can be detected by holding a burning splint near the reaction vessel. If the splint ignites, then hydrogen gas is present.

Here are some additional details about the reaction:

• The reaction is a single displacement reaction.
• Magnesium is more reactive than hydrogen, so it displaces hydrogen from the hydrochloric acid.
• The products of the reaction are magnesium chloride and hydrogen gas.
• The reaction is exothermic, meaning that it releases heat.