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How could you determine the acidity of household items? - Coggle Diagram
How could you determine the acidity of household items?
Background information
Acidity is the level of acid in a substance, such as water or oil
Acidic household items
Acidic household items include: vinegar, lemon juice, car battery acid, citric acid
how do you know if something is acidic
A quick test you can do to determine if the solution is an acid or a base is the litmus paper test. This involves dipping a special strip of paper (litmus paper) into the solution and observibng the colour of the paper
how can the level of acidity be determined
Acidity measurement can be made using pH and titration, A pH meter measures the acid strength of a sample of the concentration ions in a solution. Titration can be carried out using acid-base titration, it give the total titratable acid.
Variables
Controlled
Temperature, should be kept controlled as it can affect the equilibrium in the titration.
pH indicatior and the starting amount of the acid
Dependent
pH of the final solution
Independent
The volume of the titrant (the solution in the burette)
Things to know -titration
Are the substances safe
Most acidic substances you find in a household are safe, although there are some cleaning products which you have to be careful not to digest as they can be deadly
Does temperature make a difference
A change in temperature when performing titration can affect the equilibrium constant which can affect the result of the titration
what affects to acidity of a substance
things that affect the acidiy of a substance include, the change of the atom, the number of free hydrogen ions in a substance, if the bond is more polar or non-polar
Possible Errors
Measuring method - may not be accurately measured
Instruments (uncertainty that the burette doesn't have traces of other chemicals)
Adding to much of the base into the acid, this can happen very quickly so it important to keep an eye on any colour change that can be seen when performing titration