Chemistry, 17.07.2019 08:50 yazanadel56

Which equation represents the correct net ionic equation for the reaction between ca(oh)2 and h2so4?

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Answer from: kaitlyn114433

Answer : The chemical reaction between $Ca(OH_{2})$ and $H_{2}SO_{4}$ is is given below.

$Ca(OH_{2})$ + $H_{2}SO_{4}$ → $CaSO_{4}$ + $H_{2}O$

When calcium hydroxide reacts with sulfuric acid it undergoes neutralization reaction. Which give salt of calcium sulfate and water as their products.

The complete ionic reaction will be like this

$Ca^{2+}+ 2OH^{-} + 2H^{+} + SO_{4}^{2-} ---- CaSO_{4}_(s) + 2 H_{2}O_{(l)}$

And the net ionic equation will be as

$2OH^{-} + 2H^{+} --- 2H_{2}O$

Answer from: PineappleDevil889

Taking into account the definition of net ionic equation, the net ionic equation is:

2 OH⁻ + 2 H⁺ → 2 H₂O

Net ionic equation

The net ionic equation is a chemical equation for a reaction that lists only the species that participate in the reaction.

In other words, an ionic equation is a chemical equation where electrolytes in aqueous solution are written as dissociated ions. Usually this is a salt dissolved in water.

On the other side, you should know that a spectator ion is an ion that appears both as a reactant and as a product in an ionic equation.

Spectator ions can be either cations (positively charged ions) or anions (negatively charged ions).

When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.

This case

The balanced equation will be:

Ca(OH)₂+ H₂SO₄ → CaSO₄ + 2 H₂O

Taking into account that:

H₂SO₄ is an acid that completely dissociates.Most hydroxides are poorly soluble, except those of the alkali metals.All SO₄²⁻ salts are soluble (with exceptions).

The total ionic equation in separated aqueous solution will be:

Ca²⁺ + 2 OH⁻ + 2 H⁺ + 2 SO₄²⁻ → Ca²⁺ + 2 SO₄²⁻ + 2 H₂O

In this case, Ca²⁺ and SO₄²⁻ are the spectator ions because they appear unchanged in both the product and the reagent. So these ions cancel out by writing the net ionic equation and you get:

2 OH⁻ + 2 H⁺ → 2 H₂O

Learn more about net ionic equation:

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