while diluting an acid , why it is necessary that the acod should be added to water and not to the acid. b. dry HCL gas does not change the colour of dry litmus paper why
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The acid must always added slowing in water if water is added to a concentrated acid , the heat generated can cause fire which can lead to breakdown of glass container due to excessive heat. We know that the colour of litmus paper is changed by H + ions because of acid