Write two chemical equations for reaction of metals with water and acid
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Reactions of metals with water
When a metal reacts with water, a metal hydroxide and hydrogen are formed.
For example:
Sodium reacts vigorously with water.
sodium + water ➞ sodium hydroxide + hydrogen
2Na(s) + 2H2O(l) ➞ 2NaOH(aq) + H2(g)
Calcium reacts readily with water.
calcium + water ➞ calcium hydroxide + hydrogen
Ca(s) + 2H2O(l) ➞ Ca(OH)2(aq) + H2(g)
Calcium hydroxide is slightly soluble in water so once the solution is saturated, it starts to become milky as solid calcium hydroxide appear.
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