Compare by the way of Investigation the abilities of different indigestion remedies to neutralise excess stomach acid
Indicator in Acids and Bases shows the pH of a solution.
Litmus goes Red when the pH < 7 and Blue when the pH > 7
Methyl Orange Indicator,
Pink when the pH is 4.4 - 7
& Orange when the pH is > 7
So it is Orange in the Base
and it turns Pink when Neutral! ! !
For a fair test
All Measurements must be the same!!!
How do YOU make YOUR REMEDY mix ???
Where are you going to put the REMEDY MIX ???
hOW DO you MEASURE THE VOLUME OF
1/ REMEDY ??
a plastic dropper
2/ WATER ??
20ml - 60ml ??
How much Indicator do I add??
What do I need the indicator for ??
To see the colour change!
Drop by drop until I can see the colour!!!
Now add the Acid!
From the Burette!
What level does the acid start at ??
0 zero, the acid must be at the top!!!
Drop by drop add the acid
until the colour changes, swirling as you go!!
Take a note of the volume of acid that you used!
& Start again!
Do each one 3 times, wash out the conical flask !
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