Hello. I'm having some trouble balancing ionic equations..(adsbygoogle = window.adsbygoogle || []).push({});

Are we supposed to consider the coefficients of the reactants/products?

I came across a contradiction in the examples given in my book :

1) Na + H(+1) → Na(+1) + H2

So in order to figure out the oxidation/reduction part, we will find out the oxidation number. The oxidation number of Na would be 0 as it is in elemental form and since in the RHS it has an oxidation number of +1, it is being oxidized. In case of H, we will balance the element first. So, 2H(+1) → H2

My question is, in this case, what will be the oxidation number of H in the LHS? +1 or +2?

According to the book it is +2 so that means we would be considering the coefficients.

2) I(-1) + Br2 → I2 + Br(-1)

So again we would figure out what is being oxidized and what is being reduced. And here, since the oxidation number of I is being increased from -1 to 0, it is being oxidized. And in case of Br, we would balance the element first. So, Br2 → 2Br

Again, what would be the oxidation number of Br? -1 or -2? Do we consider the coefficient?

Please explain the answer..Thankyou

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Coefficients while balancing ionic equations

Loading...

Similar Threads for Coefficients while balancing | Date |
---|---|

Why is octanol prioritized for partition coefficients? | Jan 25, 2018 |

Why does liquid argon stop boiling after a while in dewar? | Dec 10, 2017 |

Electrokinetics: charge transfer coefficient | Jul 27, 2017 |

Confused about subscripts and coefficients wrt forumulas | Feb 9, 2017 |

Extinction Coefficient from Time series data | May 26, 2016 |

**Physics Forums - The Fusion of Science and Community**