Question

A solution of zinc nitrate is added to a solution of magnesium sulfate. express your answer as a chemical equation. identify all of the phases in your answer. enter no reaction if no reaction occurs.

Answer 1

Answer is: no reaction occurs, because all salts are soluble in water.

Balanced chemical reaction:  

Zn(NO₃)₂(aq) + MgSO₄(aq)→ Mg(NO₃)₂(aq) + ZnSO₄(aq).

Ionic reaction:  

Zn²⁺(aq) + 2NO₃⁻(aq) + Mg²⁺(aq) + SO₄²⁻(aq) → Mg²⁺(aq) + 2NO₃⁻(aq) + Zn²⁺ + SO₄²⁻(aq).

This chemical reaction is double displacement reaction - cations and anions of the two reactants switch places and form two new compounds.

Answer 2

A double-replacement equation between A solution of zinc nitrate and a solution of magnesium sulfate will not occur

Zn (NO₃)₂ (aq) + MgSO₄ (aq) ≠

Further explanation

There are two types of chemical reactions that may occur.

namely single-replacement reactions and double-replacement reactions.

• 1. A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

Not all of these reactions can occur. We can use the activity series, which is a list of elements that can replace other elements below / to the right of them in a single replacement reaction.

This series is better known as the Volta series, where the metal element with a more negative electrode potential is on the left, while the element with a more positive electrode potential on the right.

The more left the position of a metal in the series, the more reactive metal (easy to release electrons, the stronger the reductor)

Generally, the Volta series used is

Li K Ba Sr Ca Na Mg Al Mn Zn Cr Fe Cd Co Ni Sn Pb H Sb Bi Cu Hg Ag Pt Au

Example:

2Al (s) + 3Zn (NO₃)₂ (aq) → 2Al (NO₃)₃ (aq) + 3Zn (s)

The existing aluminum element can replace the zinc element, which is on the right side so the reaction will occur.

• 2. Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur

Solubility Rules:

• 1. soluble compound

All compounds of Li +, Na +, K +, Rb +, Cs +, and NH4 +

All compounds of NO₃⁻ and C₂H₃O₂⁻

Compounds of Cl−, Br−, I− except Ag⁺, Hg₂²⁺, Pb²⁺

Compounds of SO₄²⁻ except Hg₂²⁺, Pb²⁺, Sr²⁺, Ba²⁺

• 2. insoluble compounds

Compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ +

Compounds of OH− except Compounds of Li +, Na +, K +, Rb +, Cs +, NH₄⁺ , Sr²⁺, and Ba²⁺

In reaction:

Zn (NO₃) ₂ (aq) + MgSO₄ (aq) ---> Mg (NO₃) ₂ (aq) + ZnSO₄ (aq).

The reaction above includes a double-replacement equation.

Both ionic compounds in the reactants and products are dissolved compounds so that no reaction occurs

So a double-replacement equation will not occur

Zn (NO₃)₂ (aq) + MgSO₄ (aq) ≠

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Keywords: a double-replacement equation, A single-replacement reaction