Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
What are titrations used to check? |
The purity of acidic or alkaline products |
|
|
What type of reactions do titrations use? |
Neutralisation |
|
|
6 steps to titration? |
1. Add a known volume of alkali to a titration flask, along with a few drops of indicator 2. Fill a burette with acid 3.Using the burette, add the acid to the alkali a bit at a time, regularly swirling the conical flask for a good mix 4. Slow down when you think the colour is about to change 5. The indicator changes colour when all the alkali has been neutralised 6. Record the volume of acid used |
|
|
Why is it important to control the rate of a chemical synthesis? |
Too fast = unsafe Too slow = Product would be slowly made and so the profit would decrease due to low yield |
|
|
What is an exothermic reaction? |
A reaction which gives out energy to the surroundings (heat) and rises in temperature e.g. fuels burning, combustion, neutralisation, decomposition |
|
|
What is an endothermic reaction? |
Reaction that takes energy (heat in), the temperature goes down as it takes heat away from the surroundings Photosynthesis, ice to water, ice melting |
