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Explain why concentrated Sulphuric (VI) acid is a poor electrolyte and has no effect on blue litmus paper whereas 2M Sulphuric (VI) acid conducts electricity and changes blue litmus paper red.

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Concentrated Sulphuric (iv) acid has no ions (it is covalent) 2M of Sulphuric (vi) acid has H+ ions and SO42- ions

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