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WorksheetsIrreversible and Reversible Reactions
Total questions: 10
Worksheet time: 3mins
What type of reactions can able to change products back to the their original form?
Reversible reactions
Irreversible reactions
Combustion reactions
Combination reactions
Which of the following changes is irreversible change?
Melting of ice cube
Heating hydrated CuSO4
Frying an egg
Thermal decomposing NH4Cl
Which of the following combination is correct?
reversible ⇌
irreversible →
reversible ←
irreversible →
reversible ⇌
irreversible ←
irreversible ⇌
reversible →
If a reversible reaction is exothermic in the forward direction, it will be ...
exothermic in the reverse direction
endothermic in the forward direction too
endothermic in the reverse direction
not involve energy in reverse direction
What is the symbol which is used in reversible reactions?
→
Δ
+
⇌
Why is a reaction described as irreversible?
The products cannot be turned directly back into the reactants.
You need to apply heat to make the reaction work.
The products can be turned back into the reactants.
The reactants cannot be turned into the products.
Which of the following chemical reactions is reversible?
CH4 + O2 ⇌ CO2 + H2O
CuSO4.5H2O → CuSO4 + 5H2O
NH4Cl ⇌ NH3 + HCl
CaCO3 → CaO +CO2
When amounts of reactants and products become constant in reversible reaction, what might happen to the reversible reaction?
Reversible reaction reaches equilibrium.
Reversible reaction fastens forward reaction.
Reversible reaction fastens reverse reaction.
Reversible reaction slows down forward reaction.
Which of the following reactions is irreversible?
Thermal decomposition of ammonium chloride.
Heating hydrated copper sulfate.
Composition of ammonia gas from nitrogen and hydrogen gases.
Combustion of ethanol.
Which of the following reactions never goes completion in a closed container?
H2 + I2 ⇌ 2HI
C2H5OH + 3O2 → 2CO2 + 3H2O
NaOH + HCl → NaCl + H2O
CuSO4 + Zn → ZnSO4 + Cu
