Question

Why acids do not show acidic properties in absence of water?

Answer 1

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ᴀɴꜱᴡᴇʀ:ᴛʜᴇ ᴀᴄɪᴅɪᴄ ʙᴇʜᴀᴠɪᴏᴜʀ ᴏғ ᴀᴄɪᴅ ɪs ᴅᴜᴇ ᴛᴏ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ʜʏᴅʀᴏɢᴇɴ ɪᴏɴs. 
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ᴛʜᴇ ᴀᴄɪᴅs ᴡɪʟʟ ɴᴏᴛ sʜᴏᴡ ɪᴛs ᴀᴄɪᴅɪᴄ ʙᴇʜᴀᴠɪᴏᴜʀ ɪɴ ᴛʜᴇ ᴀʙsᴇɴᴄᴇ ᴏғ ᴡᴀᴛᴇʀ ᴛʜɪs ɪs ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴀᴄɪᴅs ᴘʀᴏᴅᴜᴄᴇ ʜʏᴅʀᴏɢᴇɴ ɪᴏɴs ᴏɴʟʏ ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴡᴀᴛᴇʀ.
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Answer 2

The acidic behaviour of acids is due to the presence of hydrogen ions ( H+ ions ) in them .

The acid produces hydrogen ions only in the presence of water .

So in the absence of water , an acid will

not form hydrogen ions and hence will

not show acidic behaviour .