Question

Practice: Classify each of the following reactions.

A) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
B) 2Al(s) + 3S(s) → Al₂S₃(s)
C) H₂O(l) + N₂O₅(g) → 2HNO₃(aq)
D) Ni(OH)₂(s) → NiO(s) + H₂O(l)
E) 3Ni + 2AuBr₂ → 3NiBr₂ + 2Au
F) 2HI(g) →H₂(g) + I₂(g)
G) FeO(s) + O₂(g) → Fe₂O₃(s)
H) Fe(s) + Sn(NO₃)₂(aq) → Fe(NO₃)₃ + Sn(s)
I) LiCrO₄(aq) + BaCl₂(aq) → LiCl(aq) + Ba(CrO₄)₂(s)

Answer 1

The given equations are classified based on their type: physical change, combustion reaction, unbalanced equation, and net ionic equation.

Step-by-step explanation:

(a) Physical change: equation (i) describes the change of water from a solid to a liquid state.

(b) Combustion reaction: equation (iii) represents the reaction of methanol with oxygen to produce carbon dioxide and water.

(c) Unbalanced equation: equation (e) is not balanced as the number of atoms of each element on the left side of the arrow is not equal to the number of atoms on the right side.

(d) Net ionic equation: none of the given equations are net ionic equations as they all include ions in the reactants and products.