Question

At any temperature for a neutral solution
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Answer 1

「ᴀs ᴛʜᴇ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴄʜᴀɴɢᴇs ᴛʜᴇ ᴠᴀʟᴜᴇ ᴏғ ᴋᴡ ᴄʜᴀɴɢᴇs(ᴀs ʏᴏᴜ ᴡʀᴏᴛᴇ) ᴀɴᴅ ᴛʜᴇɴ ᴛʜᴇ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ ᴏғ ʜ+ ᴀɴᴅ ᴏʜ− ᴀʟsᴏ ᴄʜᴀɴɢᴇs ᴀɴᴅ ɴᴏᴡ ᴛʜᴇ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ ᴏғ ʜ+ ᴡɪʟʟ ɴᴏᴛ ʀᴇᴍᴀɪɴ 10−7 ᴀɴᴅ ʜᴇɴᴄᴇ ᴛʜᴇ ɴᴇᴜᴛʀᴀʟ ᴘᴏɪɴᴛ sʜɪғᴛs. ᴛʜᴇʀᴇғᴏʀᴇ, ᴀᴛ ᴀɴʏ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴛʜᴇ ᴘʜ ᴏғ ɴᴇᴜᴛʀᴀʟ ᴘᴏɪɴᴛ ɪs ɴᴏᴛ 7.」♡

Answer 2

as the temperature changes the value of kw changes and then the concentration of h+ and oh- also changes and now the concentration of h+ will not remain 10-7 and hence the neutral point shifts. therefore at any Temperature the ph of neutral point is not 7.

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