What is the coefficient of Fe 3+ when the following reaction is balanced? Bi 3+ (aq) + Fe 3+ (aq) + H 2 O (l) → BiO 3 - (aq) + Fe 2+ (aq) + H + (aq)

Here it says, what is the coefficient of iron 3 ion when the following reaction is balanced? Alright. So first of all, we have the presence of h+ion. This tells me that this is a redox reaction in acidic solution because, remember, the presence of h plus means we have an acid involved in some way. What we need to realize here is that as we're balancing a redox reaction, we add in water and we add in h plus to balance oxygen and hydrogen. Let's take them out for now because as we're balancing we're gonna add them. So what's left represents our most basic redox reaction. Now let's work on balancing it and and figure out what the coefficient of iron 3 ion will be. So step 1, look for elements that are not oxygen or hydrogen. Bismuth with bismuth, iron with iron. So here we have b I three plus gives me b I o three minus. F e three plus gives me f e two plus. Now we're gonna balance elements that are not oxygen or hydrogen, 1 bismuth, 1 bismuth, 1 iron, 1 iron, so we're fine. Next, we're gonna balance out oxygens by adding water. We have here 3 oxygens, the other side has none, so add 3 waters. The other half reaction has no oxygens on either side so we don't have to add water. Next, we're gonna add h plus to balance out the number of hydrogens. So that's 3 times 2 is 6, so I'll have to put 6 h plus here. The other half reaction has no hydrogens. Now, balance overall charge, this side here overall is plus 3, this side here is minus 1, and then 6 times plus 1 is plus 6, so it's plus 5 overall. Remember, we're gonna add electrons to the more positively charged side so that it has the same charge at the end as this side. So to go from plus 5 to plus 3, I need to add 2 electrons. Plus 2. I need to add electrons to the more positive plus 2. I need to add electrons to the more positive side, so it has the same overall charge as this side. How do I go from a +3 to a+1 on a+2? I add 1 electron. Now remember your electrons in both half reactions must be the same. We have 2 electrons and 1 electron, So the lowest common multiple between them is 2. So do I have to multiply this whole thing by 2? That would mean that my coefficient in front of iron 3 ion would be 2. So this would be my answer. Here we're not asking for the redo balance redox reaction, all we're asking for is what is the coefficient of iron 3? So you can just stop here. And again the answer would be 2 as a coefficient of iron 3 ion.

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16. Oxidation and Reduction

Balancing Redox Reactions: Acidic Solutions

Introduction to Chemistry

16. Oxidation and Reduction

Balancing Redox Reactions: Acidic Solutions

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Multiple Choice

What is the coefficient of Fe³⁺ when the following reaction is balanced?
Bi³⁺ (aq) + Fe³⁺ (aq) + H₂O (l) → BiO₃^-(aq) + Fe²⁺ (aq) + H⁺ (aq)

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Verified step by step guidance

Identify the elements involved in the reaction: Bi, Fe, H, and O.

Write down the unbalanced chemical equation: Bi3+ (aq) + Fe3+ (aq) + H2O (l) → BiO3- (aq) + Fe2+ (aq) + H+ (aq).

Balance the elements one by one, starting with Bi. Ensure the number of Bi atoms on both sides of the equation is equal.

Next, balance the Fe atoms. Since Fe3+ is reduced to Fe2+, ensure the number of Fe atoms is equal on both sides.

Finally, balance the oxygen and hydrogen atoms by adjusting the coefficients of H2O and H+. Check that the charge is balanced on both sides of the equation.