Question

Chemical properties of Acids and Bases
Response of various laboratory substances with indicators.
Activity 1
Collect the following samples from the science laboratory:
hydrochloric acid (HCI), sulphuric acid (H,SO.), nitric acid (HNO3),
acetic acid (CH,COOH), sodium hydroxide (NaOH), calcium hydroxide
Ca(OH)2), magnesium hydroxide [Mg(OH),],ammonium hydroxide
NH,OH) and potassium hydroxide (KOH), prepare dilute solutions of
the respective substances.
Take four watch glasses and put one drop of the first solution in each
one of them and test the solution as follows.
i dip the blue litmus paper in the first watch glass.
ii. dip the red litmus paper in the second watch glass.
iii. add a drop of methyle organge to the third watch glass, and
iv. add a drop of phenolphthalein to the fourth watch glass.
Observe the respective colour changes and note down in Table-1. Do
the same with all the above dilute solutions.
Table-1
Sample Red litmus Blue litmus Phenolphthalmi Meth​

Answer 1

Answer:

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