1. 5 a day revision Acids and alkalis What do these hazard symbols mean?
Suggest a safety precaution for working with acids.
What do we use indicators for? Give an example.
What do these hazard symbols mean?
What is the pH of the following:
Weak acid
Neutral
Strong alkali
Strong acid
What is the colour of each indicator when a neutral substance is added?
Indicator B is currently green in colour. What colour changes would it go through if you gradually added more and more hydrochloric acid?
If you add all the indicators together how many different colours would you get between pH 1 and 14?
@aegilopoides