They contain alkali with a scale of pH 7.0
OH+
no
carboxylic acid
No coffee is generally around pH 5. To be alkali it would need to be above pH 7.
Yes some Fertilizer's contain small amounts of Alkali
They contain alkali with a scale of pH 7.0
OH+
NaHCO3 contain sodium - an alkali metal.
Sour milk is an alkali contain different alkalis in it.
no
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alkaline battery's do.
Neither
no it is an acid
OH-
carboxylic acid