02. Investigating Temperature Change and Neutralisation

What are the hazards?

1.0M Hydrochloric acid is low hazard, 1.0M sodium hydroxide solution is corrosive

What are the risks for the hazards?

Burn skin / eyes when measuring

What is the control measure of the hazards?

Wear gloves / goggles

What is the reaction between hydrochloric acid and sodium hydroxide?

A neutralisation reaction

Give an example of a neutralisation reaction

Reaction between hydrochloric acid and sodium hydroxide

How could we improve the method?

By reducing heat loss

?How would you reduce heat loss?

Putting a lid on

What is the issue if you were to put the chemicals in the fridge then start straight away?

No reactions as particles would not have activation energy -> no energy to collide + react

If you repeat the experiment would you improve accuracy?

No you would need to change to more accurate equipment

What does neutralisation involve?

Acids reacting with bases

What is the equation for the experiment?

NaOH + HCl = NaCl + H2O

How do you calculate energy change?

Energy change = Mass of water X Specific heat capacity of water X Maximum temperature change