(1) CuCO3(s) ==> CuO(s) + CO2(g)
(2) 2KClO3(s)==>2KCl(s) + 3O2(g)
(3) AgNO3(aq) + KCl(aq) ==>AgCl(s) + KNO3(aq)
(4) H2SO4(aq) + 2KOH(aq)==> K2SO4(aq) + 2H2O(l)
Answer:
B. Lithium (Li)
Explanation:
Lithium forms an ionic compound with nitrogen with the general formula X₃N. When lithium and nitrogen react, they form a nitride called lithium nitride.
The Lithium nitride is actually prepared by the direct combination of elemental lithium with nitrogen gas. Below is the reaction equation:
6Li + N₂ → 2Li₃N
The reaction can occur when a solution of lithium in liquid sodium metal is treated with N₂. When the Lithium nitride reacts with water, it does that violently and produces ammonia.
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b. the hydronium ion
c. sodium hydroxide
d. hydrogen peroxide