Question

question 2. classify the reaction in each of the following equations:
a) bacl₂(aq) + k₂cro₄(aq) → bacro₄(s) + 2kcl(aq)
b) si(s) + 2cl₂(g) → sicl₄(l)
c) 2c₆h₆(l) + 15o₂(g) → 12co₂(g) + 6h₂o(l)
d) 2nacl(l) → 2na(l) + cl₂(g)
e) zn(s) + 2hcl(aq) → zncl₂(aq) + h₂(g)
synthesis reaction
decomposition reaction
single - displacement reaction
double - displacement reaction
combustion reaction

Explanation:

a) Two ionic compounds swap ions to form a solid precipitate, matching double-displacement.
b) Two reactants combine into one product, matching synthesis.
c) A hydrocarbon reacts with oxygen to form CO₂ and H₂O, matching combustion.
d) One compound breaks into two simpler substances, matching decomposition.
e) A single element replaces another in a compound, matching single-displacement.

Answer:

a) Double-displacement reaction
b) Synthesis reaction
c) Combustion reaction
d) Decomposition reaction
e) Single-displacement reaction