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Question:

What are the characteristics of the composition of the base?

What are the characteristics of the composition of the base?

Answer:

Metal ions and hydroxide ions
Can provide electronic pairs of substances. (Some salt solution of the pH value is greater than 7, but it is not a base, such as: soda ash (sodium carbonate) Na2CO3, baking soda (sodium bicarbonate) NaHCO3, etc.)
The anions obtained when ionizing are all OH- are bases; alkali: OH- and metal ions (or NH4).

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