The Hydrochloric Acid, Sodium Thiosulphate Reaction Research: "Hydrochloric acid is a strong colourless acid formed when hydrogen chloride gas dissociates in water, used in industrial and laboratory processes. Hydrochloric acid is also produced in the stomach, where it initialises the digestion of proteins. Sodium thiosulphate is a white crystalline salt used as a fixer in photography and as a bleach." Encarta World English Dictionary When hydrochloric acid reacts with sodium thiosulphate, sulphur is created. Sulphur is a pale yellow colour; after the reaction the sulphur stays in the same container as the other products, meaning that the solution will be a pale yellow colour. Na2S2O3 + H++ Cl- [IMAGE] 2NaCl + S + SO2 + H2O Sodium thiosulphate solution Hydrochloric acid Sodium chloride solution Sulphur Sulphur dioxide Water "The sulphur does not start to form immediately, but begins to appear after a short time, turning the mixture cloudy. You cannot tell precisely when the reaction has stopped." AQA GCSE Higher Sulphur dioxide (SO2) is a colourless gas, belonging to the family of gases called sulphur oxides (SO_). It reacts on the surface of a variety of airborne solid molecules, is soluble in water and can be oxidised within airborne water droplets. http://www.doc.mmu.ac.uk/aric/eae/Acid_Rain/Older/Sulphur_Dioxide.html Many factors can affect the rate of reaction; concentration, temperature, ratio of the substances, amount, stirring, and catalysts are these factors. Rate of reaction is the speed of reaction. In essays written by young scientists, they have used concentration as a variable in their experiments; some have used a light sensor, connected to a data logger, to measure the amount of light passing through the "cloudy" liquid. 1 moles = 6.02 ´1023 The particles in the hydrochloric acid and sodium thiosulphate need to collide to react, this is called the collision theory; a minimum force of collision is required for the reaction to take place; this is
How am I going to make it a fair test I will use a clean flask for
5. Add Hcl, as soon as it mixes with the ( ), start the stopwatch
The Effect of Concentration of Hydrochloric Acid on the Rate of Reaction with Magnesium Aim: To investigate the effect of concentration of hydrochloric acid on the rate of reaction with magnesium Prediction: As the concentration of the hydrochloric acid increases, so will the rate of reaction Hypothesis: In a reaction, particles of two different reactants react together to form a product. The reaction only takes place on account of two things, if the particles collide, and if the collision has enough 'activation energy'. The two reactant particles, in this case magnesium particles and hydrochloric acid particles, must collide with each other on the correct 'collision course'. If this does not occur then no chemical reaction will take place. The reaction must also have enough energy, this can be affected by temperature, the more heat the particles have the faster they move and so the more energy therefore more chance of successful collisions.
We will set up a conical flask on top a cross. We will vary the
Investigation of How Temperature Affects the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid
* Concentration - I will try my best to use all the acid from the
The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid
Investigating the effect of Temperature on the reaction between Sodium Thiosuphate and hydrochloric acid · Planning I am investigating the different temperatures on the reaction between Sodium Thiosuphate and Hydrochloric acid. The factors I could investigate would be temperature, concentration and substances. I have chosen to investigate Temperature. I predict that the higher the temperature the more rapidly the cross would obscure.
The Effects of Concentration on Reaction Rate with Sodium Thiosulphate ---------------------------------------------------------------------- Planning = == == =
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
have either not stir the mixture or use a machine to stir it at the
Investigating Reaction Rates of Sodium Thiosulphate and Hydrochloric Acid Aim: To investigate the rate of reaction of Sodium Thiosulphate and Hydrochloric acid. In this investigation I will be varying the concentration of Sodium Thiosulphate only and not the Hydrochloric acid concentration. In this investigation I will use the following word equation: Sodium Thiosulphate + Hydrochloric acid In this investigation I will use the following symbol equation: Na2S2O3 + Hcl Prediction: I predict that as the Sodium Thiosulphate concentration increases the rate of reaction will also increase. The reason I predict this is because there will be a higher concentration of particles and so a faster reaction would be able to occur-
Reaction Between Hydrochloric Acid and Magnesium Introduction In the reaction between hydrochloric acid and magnesium. Hydrochloric acid will dissolve the magnesium and produce hydrogen. gas. The sand is All chemical reactions involve reactants which when mixed may cause a chemical reactions which will make products. In my case, the reactants are hydrochloric acid and magnesium ribbon.
a bigger one so I can fit the cross under it and also be able to pour
My aim in this piece of work is to see the effect of temperature on the rate of a reaction in a solution of hydrochloric acid containing sodium thiosulphate.