why is HCL a pure substance
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Answer: Ice, iron, calcium oxide and mercury are pure substances since they contain particles of only one kind of matter. In contrast, milk, hydrochloric acid (hydrogen chloride gas dissolved in water), brick and air cannot be called pure substances because they consists of particles of more than one kind of matter.
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because it is a acid
Explanation:
it can be easily prepared hydrogen gas
when it is react with metal zinc
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