How can i balance Na + Ca2+ --> Ca + Na+

Question

asked Feb 17, 2022 131k views

1 Answer

Reki · Answer 1 · 2022-02-21T00:36:48+0000

Answer:

$2Na + Ca^(2+) \rightarrow Ca + 2Na^+$

Step-by-step explanation:

Hello!

In this case, since this a reaction in which the oxidation state of the metals is changing, we need to apply a redox method for which:

$Na\rightarrow Na^++e^-\\\\Ca^(2+)\rightarrow Ca+2e^-\\\\\\2Na\rightarrow 2Na^++2e^-\\\\Ca^(2+)\rightarrow Ca+2e^-$

Thus, the result is:

$2Na + Ca^(2+) \rightarrow Ca + 2Na^+$

Regards!