Write down the changes that will be seen in each instance and explain
the reason behind it.
a) A litmus paper was dropped into 2ml dilute HCL. Then 2ml Conc. NaOH was added to it
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4
Answer:
The red damp litmus paper turns blue on contact with the NH3(g) formed from the reaction.
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Explanation:When the litmus paper gets dropped into HCl the litmus turns red but at the sam time if NaOH is added to HCl then the following reaction takes place:
HCl+NaOH---->NaCl+H20
that is the chemicals gets neutralized and the litmus paper turns green
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