Homeworks academic service


A description of the investigation on the reaction of sodium thiosulphate and hydrocloric acid

As we raise the temperature, the rate of reaction increases.

Investigating The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid

Temperature has a large effect on the rate of reaction. You can also monitor the rate of reaction between the sodium thiosulfate and hydrochloric acid by using a light sensor.

The solution gets more cloudy as the reaction carries on, so you can record the rate at which light is blocked by the precipitate of sulfur.

  • Explaining the effect of temperature So why does temperature have such a big effect on the rate of reactions?
  • However, as the reaction proceeds, sulphur precipitates that make the solution more opaque and eventually the mark gets completely masked;
  • For any chemical reaction, its feasibility and extent of reaction are very important.

We can then convert these readings into amounts of sulfur formed to get a graph like the one in Fig. The line levels off at the same height at both temperatures.

  1. Therefore the rate of the reaction can be studied by monitoring the opaqueness of the reaction. Marble Chips and Hydrochloric Acid...
  2. Student questions Here are some possible questions to ask students.
  3. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes.

How can you tell from the graph that the same amount of products are produced at both temperatures? The lines on the graph are both curves.

  1. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes.
  2. Once the students understand the concept of the experiment and the different steps, they can perform the experiment in the real lab more accurately and quickly. The effect of concentration on rate...
  3. The catalyst solutions can be provided in dropping bottles and the iron III nitrate and sodium thiosulfate solutions in 500 cm3 beakers.
  4. This means that there will be more chance of reactant particles colliding. It is important that students only use one drop of catalyst.

Both lines level off at the same value on the vertical axis. Explaining the effect of temperature So why does temperature have such a big effect on the rate of reactions? There are two factors at work here: As the temperature is raised, the particles gain energy and move around more quickly.

Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid

This means that there will be more chance of reactant particles colliding. There will be more collisions between particles in any given time, and more frequent collisions result in an increased rate of reaction.

Just another WordPress site

The increased energy of the particles means that a greater proportion of the collisions in the reacting mixture actually produce a reaction.

More collisions happen with enough energy to exceed the activation energy of the reaction. Remember that the activation energy of a reaction is the minimum amount of energy needed before a reaction can take place. The second factor accounts for most of the effect that temperature has on the rate of reaction. Effect of temperature on the rate of reaction.

Which two of these statements are valid reasons why temperature increases the rate of reaction? Increasing the temperature lowers the activation energy of a reaction. Increasing the temperature results in a higher rate of collision between particles. Increasing temperature produces more effective collisions with enough energy for a reaction to occur. Summary As we increase the temperature, we increase the rate of reaction. The main reason for this is that a higher proportion of the collisions at the higher temperature will have sufficient energy to result in a reaction.

  • The graph should be a straight slopping line;
  • Once the students understand the concept of the experiment and the different steps, they can perform the experiment in the real lab more accurately and quickly.

In other words, more particles collide with an energy greater than the activation energy for the reaction. In addition, as we increase the temperature, the particles gain more energy and move around faster.

  • How can you tell from the graph that the same amount of products are produced at both temperatures?
  • As the concentration of the reactant increases, the number of reacting molecules increases;
  • Method In this experiment there will be different variables;
  • Factors affecting rate of reaction in this experiment, sodium thiosulphate na 2 s 2 o 3 between sodium thiosulphate and hydrochloric acid results in sulphur;
  • Increasing the temperature results in a higher rate of collision between particles;
  • Write a word equation for the chemical reaction that at the reaction between hydrochloric acid and acid reacts with sodium thiosulphate solution.

This increases the chance of collisions between reactant particles, producing more frequent collisions. What two substances are produced when magnesium ribbon reacts with dilute sulfuric acid?

A chemical experiment of the reaction between sodium thiosulphate and hydrochloric acid