why dry hcl gas not change the colour of blue into red litmus but the presence of water hcl gas turns blue litmus into red in this reaction what is the role of water
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Because the acid doesn'tget any medium to dissociate in hydronium ions
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Without water acid doesn't react. Due to lack of free ions As water is not present. ... To change the colour of blue litmus paper to red, there must be a presence of acid. Dry HCl gas is not acidic because water is required for the dissociation of HCl into H+ and Cl-.
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