Question

If a substance's pH value is 7.4, then is it Acid or Base??

Answer 1

the substance is a base

Answer 2

ʜᴇʟᴡᴡ ꜰʀɪᴇɴᴅ yᴏᴜʀ ᴀɴꜱᴡᴇʀ ɪꜱ.

It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, at pH 7, being neither an acid nor a ʙᴀꜱᴇ

ᴛʜᴀɴᴋꜱ ᴍᴀʀᴋ ᴀꜱ ʙʀᴀɪɴʟɪᴇꜱᴛ