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Consider the chemical equation below.

Mg(OH)2 + 2HNO3 --> Mg(NO3)2 + 2H2O

Which is the net ionic equation? (B. is already incorrect.)

A. H^+ + OH^- --> H2O
C. Mg^+2 + 2NO3^- --> Mg^+2 + 2H2O
D. Mg^+2 + 2OH^- + 2H^+ + 2NO3^- --> Mg^+2 + 2NO3^- + 2H2O

Respuesta :

i would say A but then again im not too sure so hope that makes it easier to somehow
Dejanras

Answer is: A. H⁺ + OH⁻ → H₂O.

Balanced chemical reaction:

Mg(OH)₂ + 2HNO₃ → Mg(NO₃)₂ + 2H₂O.

Ionic reaction:

Mg²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + 2H₂O.

Cancel all species that appear on both sides of the equation to get net ionic reaction.

Net ionic reaction: 2OH⁻ + 2H⁺ → 2H₂O or OH⁻ + H⁺ → H₂O;

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