Question

Which equation represents the correct net ionic equation for the reaction between Ca(OH)2 and H2SO4?

Upper H superscript plus, plus upper O upper H superscript minus right arrow upper H subscript 2 upper O.
2 upper H superscript plus, plus 2 upper O upper H superscript minus right arrow upper H subscript 2 upper O.
Upper C a superscript 2 plus, plus 2 upper O upper H superscript minus, plus upper S upper O subscript 4 superscript 2 minus right arrow upper C a superscript 2 plus, plus upper S upper O subscript 4 superscript 2 minus, plus 2 upper H subscript 2 upper O.
Upper C a (upper O upper H) subscript 2 plus upper H subscript 2 upper S upper O subscript 4 right arrow upper C a upper S upper O subscript 4 plus 2 upper H subscript 2 upper O.

Answer 1

B. no reaction

Step-by-step explanation:

Answer 2

Answer: The correct net ionic equation for the reaction is
`2H^(+)(aq)+2OH^(-)(aq)\rightarrow 2H_2O(l)`

Step-by-step explanation:

Net ionic equation is defined as the equations in which spectator ions are not included.

Spectator ions are the ones that are present equally on the reactant and product sides. They do not participate in the reaction.

The balanced molecular equation is:

`Ca(OH)_2(aq)+H_2SO_4(aq)\rightarrow CaSO_4(aq)+2H_2O(l)`

The complete ionic equation follows:

`Ca^(2+)(aq)+2OH^-(aq)+2H^+(aq)+SO_4^(2-)(aq)\rightarrow 2Ca^(2+)(aq)+SO_4^(2-)(aq)+H_2O(l)`

As calcium and sulfate ions are present on both sides of the reaction. Thus, they are considered spectator ions.

The net ionic equation follows:

`2H^(+)(aq)+2OH^(-)(aq)\rightarrow 2H_2O(l)`

Hence, the correct net ionic equation for the reaction is
`2H^(+)(aq)+2OH^(-)(aq)\rightarrow 2H_2O(l)`