how identify acid and base in laboratory with out dissolve in water?
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To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions).
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pH of Acids and Bases
Another way to check if a substance is acidic or basic is to use litmus paper. ... Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions.
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