The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid

The rate of reaction between sodium thiosulphate and hydrochloric acid
Candidate name: Yeo Jin Kim (Kimberly Kim)
Candidate number: 000791-021
Teacher: Yitao Duan

1.0 Aim
The aim of this experiment is to investigate the changing of concentration effect the rate of reaction between sodium thiosulphate and hydrochloride. 2.1 Chemical Equation

2.0 Raw data 3.2 Qualitative Data
2.1.1 Before the experiment Substance | Color | State | Smell | Hydrochloride (HCl) | Colorless | Liquid | Weak sour smell | Sodium Thiosulphate (Na2S2O3) | Colorless | Liquid | None | Water | Colorless | Liquid | None |

2.1.2 During the experiment (When Sodium Thiosulphate did not react with Hydrochloride) Substance | Color | State | Mixture | colorless | Liquid |

2.1.2 After the experiment (When Sodium Thiosulphate react with Hydrochloride) Substance | Color | State | Comment | Mixture | Cloudy with white solid | Liquid | When the reaction occur, there will be a new product which is S(s). |

3.3 Quantitative Data
Table 1- This table shows the quantitative data of length of time taken for different concentration of sodium thiosulphate with hydrochloride to finish reaction

Volume of Na2S2O3 (cm3) | Volume of Water(cm3) | Volume of Water(cm3) | Trial 1(s) | Trial 2(s) | Trial 3(s) | 10 | 40 | 10 | 190 | 193 | 195 | 20 | 30 | 10 | 82 | 85 | 86 | 30 | 20 | 10 | 68 | 70 | 71 | 40 | 10 | 10 | 38 | 39 | 39 | 50 | 0 | 10 | 31 | 32 | 30 |

3.0 Processing raw data
3.1.1 Table 2- this table shows the average time taken for the reaction Volume of Na2S2O3 (cm3)(±0.5 ml) | Volume of Water (cm3)(±0.5 ml) | Volume of Water(cm3)(±0.5 ml) | Trial 1(s) | Trial 2(s) | Trial 3(s) | Average of time(s) | 10 | 40 | 10 | 190 | 193 | 195 | 192.67 | 20 | 30 | 10 | 82 | 85 | 86 | 84.3 | 30 | 20 | 10 | 68 | 70 | 71 | 69.67 | 40 | 10 | 10 | 38 | 39 | 39 | 38.67 | 50 | 0 | 10 | 31 | 32 | 30 | 31 |

3.2.1 Table 3- this table