# Science Coursework Rates Of Reaction

This means the higher the temperature, the The last factor that increases rate of reaction is the surface area.Grinding up the magnesium into a powder increases the surface area, so the acid has more space to react on.How does temperature affect the rate of reaction between sodium thiosulphate and hydrochloric acid?

This means the higher the temperature, the The last factor that increases rate of reaction is the surface area.Grinding up the magnesium into a powder increases the surface area, so the acid has more space to react on.How does temperature affect the rate of reaction between sodium thiosulphate and hydrochloric acid?

Again, I would need approximately six or seven results to create enough points to put on a graph graph.

Collecting Gas using a Syringe Equipment needed: -Scales; -Conical flask; -Gas syringe; -Stand with clamp; -Hydrochloric acid (30 ml); -Magnesium strip (2cm long); -Rubber tube with bung.

This is basically how hard and how often particles collide with each other.

The more and harder they collide, the faster the reaction time will be.

In a high concentration of acid it can take just a few seconds for magnesium to furiously bubble and finally completely dissolve with no trace except for hydrogen gas.

Equation of magnesium and hydrochloric acid: 2 HCl Mg [IMAGE]Mg2 H2 Measuring rates of reaction In this investigation there are two experiments that can be used to test rates of reaction.

If there are greater amount particles then there will be greater number collisions taking place and so the rate of reaction increases as well as the temperature.

The collision theory explains us that if a chemical reaction is to take place, the particles in a substance have to collide into each other with enough energy to break bonds and hence to form new bonds.

I will do this by timing how long it takes for the cross to disappear.

I will be measuring the quantity of sodium thiosulphate and hydrochloric acid I use, by using a ‘pipette’ and a measuring cylinder, which will allow me to precisely conduct my measurements.

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