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

Answer : The chemical reaction between and is is given below.

+ → +

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

And the net ionic equation will be as

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

2 OH⁻ + 2 H⁺ → 2 H₂O

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.

The balanced equation will be:

Ca(OH)₂+ H₂SO₄ → CaSO₄ + 2 H₂O

Taking into account that:

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

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alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.