Question

Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if no precipitate is formed.A) liquid pentanol (C5H12O) and gaseous oxygenB) aqueous ammonium chloride and aqueous calcium hydroxideC)aqueous strontium sulfide and aqueous copper(II) sulfate

Answer 1

Combustion of pentanol with oxygen yields carbon dioxide and water. A precipitation reaction between ammonium chloride and calcium hydroxide forms ammonia, water, and calcium chloride. Strontium sulfide and copper(II) sulfate react to produce strontium sulfate precipitate and copper metal.

Step-by-step explanation:

When combining liquid pentanol (C5H12O) and gaseous oxygen, the chemical equation representing their combustion could be: 2 C5H12O(l) + 15 O2(g) → 10 CO2(g) + 12 H2O(l)

In this case, the products are carbon dioxide gas and liquid water, and this type of reaction is known as a combustion reaction.

For the reaction between aqueous ammonium chloride and aqueous calcium hydroxide, a precipitation reaction occurs, and the chemical equation is: 2 NH4Cl(aq) + Ca(OH)2(aq) → 2 NH3(g) + CaCl2(aq) + 2 H2O(l)

This reaction releases ammonia gas, and the products include aqueous calcium chloride and liquid water.

The reaction between aqueous strontium sulfide and aqueous copper(II) sulfate yields a solid precipitate of strontium sulfate. The chemical equation is: SrS(aq) + CuSO4(aq) → SrSO4(s) + Cu(s)

Strontium sulfate is the insoluble precipitate formed, evident from the phase 's' indicating solid, while copper metal is also produced in this reaction.

Answer 2

A) C₅H₁₂O(l) + 7.5 O₂(g) → 5 CO₂(g) + 6 H₂O(l)

B) No reaction

C) SrS(aq) + CuSO₄(aq) → CuS(s)↓ + SrSO₄(aq)

Step-by-step explanation:

A) liquid pentanol (C₅H₁₂O) and gaseous oxygen.

This is a combustion reaction. assuming the combustion is complete, the products are CO₂ and H₂O.

C₅H₁₂O(l) + 7.5 O₂(g) → 5 CO₂(g) + 6 H₂O(l)

B) aqueous ammonium chloride and aqueous calcium hydroxide.

We could expect a double displacement reaction to take place. But since the products are CaCl₂ and NH₄OH, both of them soluble, no reaction occurs.

C)aqueous strontium sulfide and aqueous copper(II) sulfate.

This is a double displacement reaction. The formed precipitate is CuS.

SrS(aq) + CuSO₄(aq) → CuS(s)↓ + SrSO₄(aq)