Practical Investigation: Neutralization Reaction Graph Analysis
Conduct a required practical to determine the amount of sodium hydroxide needed to neutralize hydrochloric acid. Plot a graph to analyze temperature changes in the exothermic reaction. Ensure safety precautions when working with hazardous chemicals. Compare results with other groups for evaluation.
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Presentation Transcript
Required practical S: recap endo/exothermic reactions M: carry out required practical (reaction between hydrochloric acid and sodium hydroxide) Plot graph and use it to estimate how much sodium hydroxide was needed to neutralise the acid P compare results Student sheet for practical is in prep room
Exothermic Endothermic
Temperature changes (required practical) LO: to investigate the temperature changes that take place when an acid is neutralised by an alkali To plot a graph and use it to determine how much sodium hydroxide was needed to fully react with the acid Risk assessment: Solutions for this practical are quite concentrated to give reasonable results 2M sodium hydroxide is particularly hazardous to eyes Safety goggles must be worn at all times Do not put them on a work surface at any time Wipe up any spillages immediately with a paper towel
Evaluation Compare your results with another group
