15.
Prepare
violet
cabbage
juice
by
boiling
a
piece
of
cabbage
in
water
.
Use
it
indicator
and
test
acidic
and
basic
solutions
with
it
.
Present
your
observatie
the form of a table.
Answers
Answer:
this will be act as a indicator and gives different colours in acidic , basic and neutral medium ..
Answer:
Aim:-
To determine which chemicals are bases and which are acids.
Apparatus Required:-
Water
Red cabbage leaves
Colanders
Vinegar
Lemon juice
Soda(baking soda)
Detergent
Glass jars of a similar size
Procedure:-
1. Cut the cabbage leaves into small pieces.
2. Boil separate cups of water as they will be required to submerge your pieces later on.
3. Place the cabbage pieces in a bowl and pour the water in the bowl. Keep it for several minutes so that the cabbage pieces get soaked. You can also use a mixer to grind the leaves and obtain a solution.
If you are not using the mixture then separate the juice from the leaves.
4. Take glass jars and place them about two inches apart. Pour every chemical (lemon juice, vinegar, detergent and soda) in each jar.
5. Now to determine whether the substance is a base or an acid pour the cabbage juice in each jar. Here, if the mixture turns pink or red the chemical is an acid and if it turns blue or green the chemical is usually a base.
