Question

balancing and types of reactions practice
balance the equation:
□ca(oh)₂ + □h₂so₄ → □caso₄ + □h₂o
type of reaction:
□

Explanation:

Step1: Balance Ca

On both sides, Ca is already 1, so no change.

Step2: Balance SO₄

SO₄ is 1 on both sides (in H₂SO₄ and CaSO₄), so no change.

Step3: Balance OH and H

Left side: Ca(OH)₂ has 2 OH⁻, H₂SO₄ has 2 H⁺. Right side: H₂O. To balance H and O from OH⁻ and H⁺, we need 2 H₂O (since 2 OH⁻ + 2 H⁺ = 2 H₂O). Now check:
Left: 1 Ca(OH)₂, 1 H₂SO₄
Right: 1 CaSO₄, 2 H₂O
Now all atoms are balanced: Ca:1, S:1, O: (2 + 4) = 6 on left; (4 + 2) = 6 on right. H: (2 + 2) = 4 on left; 2×2 = 4 on right.

Balanced Equation:

$\ce{Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O}$

Type of Reaction:

This is a double - displacement reaction (specifically a neutralization reaction, as an acid (H₂SO₄) reacts with a base (Ca(OH)₂) to form a salt (CaSO₄) and water (H₂O)).

Answer:

Balanced equation coefficients: 1, 1, 1, 2. Type of reaction: Double - displacement (Neutralization)