Explain the reactions of Calcium, Aluminium and Zinc with hydrochloric Acid.
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Calcium is a metal that is higher than hydrogen in the e.c.s. (electro-chemical series, also known as electro-activity series.) Calcium therefore has a greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds. Hydrochloric acid is H Cl and Calcium pellets have been observed to replace the hydrogen in H Cl (which is evidenced by the escape of hydrogen in forms of bubbles) and the newly formed salt of Calcium Chloride has been detected. .
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