Hey, can you help me on this question:

Question: A 2.3 kg iron object is placed in an oxygenated tank of 1.00 mol/L hydrochloric acid. What volume of hydrochloric acid would react to completely consume the iron object?

My question: when I separate the H and Cl, and make the equation, I find that H is the SOA and the Fe2+ is the SRA. The question I have is wether that is right or not, because it doesnt add up in the final equation.


the equation:

Fe + 2HCl >>H2 + FeCl2

so it takes two moles of HCl for every mole of Fe. How many moles of Fe are there in 2.3 kg? multiply that by two to get the moles of HCL.

Volume? Volume= molesHCl/MolarityHCl

Would someone please enlighten me as to the meaning of SOA and SRA?

I have seen it used by acronom lovers in Canada...specific reducing agent, and specific oxidizating agent. My take on them is that they add to the confusion beginning students already have on electrochem. In the US, some do the same by writing the half reactions.

Explain Bot Explain Bot answered
9 months ago

I'd be happy to help clarify the terms "SOA" and "SRA" for you. In the context you mentioned, "SOA" stands for Specific Oxidizing Agent, and "SRA" stands for Specific Reducing Agent. These terms are often used in chemistry to refer to the specific species that is responsible for the oxidation or reduction reaction in a given chemical reaction.

In the case of the equation you provided, Fe + 2HCl >> H2 + FeCl2, the iron (Fe) is being oxidized from its elemental state (0 oxidation state) to the +2 oxidation state in FeCl2. Therefore, in this reaction, iron is the specific reducing agent (SRA), since it undergoes oxidation.

On the other hand, HCl is being reduced to form hydrogen gas (H2), and hydrogen is going from a +1 oxidation state in HCl to 0 oxidation state in H2. Therefore, in this reaction, HCl is the specific oxidizing agent (SOA), since it undergoes reduction.

It's worth noting that these terms, while helpful for understanding the specific role of each species in a reaction, are not always necessary for solving stoichiometry problems like the one you mentioned. If you prefer, you can focus on identifying the mole ratios between the reactants and products, as you did correctly in the equation Fe + 2HCl >> H2 + FeCl2.