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Question

Studying the properties of acids and bases(hcl&NAOH) on the basis of their reaction with
a) litmus solution(blue/red)
b)zinc metal
c)solid sodium carbonate

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Solution

Dear Student(a)HCl will turn blue litmus red.NaOH will turn red litmus blue.(b) Zinc metal on reacting with HCl will give ZnCl2 with liberation of H2 gasZn+2HClZnCl2+H2Zinc metal on reacting with NaOH will give Na2ZnO2 (sodium zincate) and H2Zn+2NaOHNa2ZnO2+H2(c) HCl on reacting with Na2CO3 gives sodium chloride, carbondioxide and water2HCl+Na2CO32NaCl+CO2+H2O NaOH does not reacts with sodium carbonate because both have common Na+ ion.Regards

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