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Reaction Between Hydrochloric Acid And Magnesium

3074 words - 12 pages

Reaction Between Hydrochloric Acid and Magnesium Introduction

In the reaction between hydrochloric acid and magnesium, the
hydrochloric acid will dissolve the magnesium and produce hydrogen
gas.

All chemical reactions involve reactants which when mixed may cause a
chemical reaction which will make products.

In my case the reactants are hydrochloric acid and magnesium ribbon.
The chemical reaction takes place when the magnesium ribbon is dropped
into the hydrochloric acid. The products that are formed during this
reaction are hydrogen gas and magnesium chloride. The formula equation
for this experiment is:

Mg + 2HCl (r) MgCl2 + H2

Magnesium + Hydrochloric acid (r) Magnesium Chloride + Hydrogen

(s) (Aq) (aq) (g)

Magnesium will react with hydrochloric acid, because it is higher in
the reactivity series that hydrogen. When the two chemicals react a
displacement reaction will take place and the magnesium will displace
the hydrogen in the hydrochloric acid forming magnesium chloride and
hydrogen gas.

Reactivity Series

K (potassium)

Na (sodium

Li (lithium) all too dangerous to react with a strong acid

Ba (barium)

Ca (Calcium)

Mg (magnesium) -

Al (aluminium) manageable metals

Zn (zinc) these metals will react with hydrochloric acid as they

Fe (iron) they are higher in the reactivity series than hydrogen

Sn (tin) and so a displacement reaction will take place

Pb (lead) ¯

H (hydrogen)

Cu (copper)

Hg (mercury) none of these metals will react with hydrochloric

Ag (silver) acid as they are all lower in the reactivity series than

Al (gold) hydrogen, therefore a displacement reaction will not happen

Depending on certain factors the rate that this reaction will take
place will either increase or decrease. The factors that may affect
the rate of reaction are as follows:

· Temperature of the Hydrochloric Acid

· Mass of the magnesium ribbon used

· Concentration of the Hydrochloric acid

· Surface area of the magnesium ribbon used

All of these factors will change the rate of reaction because of the
Collision Theory. This is a theory that is used to predict the rate of
a reaction. The Collision Theory is based on the idea that for a
chemical reaction to take place, it is necessary for the reacting
particles to collide with each other with enough energy to break or
form new bonds between the other particles, which is called a
successful collision. If when they collide and they do not have enough
energy to break or form new bonds then they will simple bounce of each
other, causing an unsuccessful collision.

Ways that I could record my experiment

There are several way which I could record my experiment. The...

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