Investigating the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid

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Investigating the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid

Aim

---

I will be investigating the rate of reaction between Sodium

Thiosulphate and Hydrochloric acid. I intend to find the difference

in the rate of reaction when I change the concentration of the Sodium

Thiosulphate, as I am only changing the concentration of the Sodium

Thiosulphate I will keep the concentration of Hydrochloric acid the

same at all times.

[IMAGE]Hydrochloric + Sodium Water +

Sodium + Sulphur + Sulphur

Acid Thiosulphate

Chloride Dioxide

[IMAGE]2HCl + Na S O H O + 2NaCl + SO + S

Prediction

I predict that from this experiment I will find that the weaker the

concentration of Sodium Thiosulphate is to the concentration of

Hydrochloric Acid, the longer the reaction will take to occur.

Theory

In my prediction I have stated that, the weaker the concentration of

Sodium Thiosulphate is to the concentration of Hydrochloric Acid, the

longer the reaction will take to occur. In my opinion this will

happen because of the particle theory. As we already know, everything

is made up of millions of tiny particles. Particles are units of

matter smaller than an atom. Particles are the basic units of all

matter and energy. Therefore I can conclude that there are definitely

particles in the reactants that I will be using in my experiment.

Before the two chemical reactants can react their particles must come

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