AP Chemistry
4.9 Oxidation-Reduction (Redox) Reactions
4.5 Stoichiometry
An alkaline exhaust scrubber uses aqueous permanganate ions to oxidize captured sulfite ions. The unbalanced skeletal equation for the reaction is shown below.
\[ \text{MnO}_4^-\text{(aq)}+\text{SO}_3^{2-}\text{(aq)}\rightarrow\text{MnO}_2\text{(s)}+\text{SO}_4^{2-}\text{(aq)} \]
The solvent \(\text{H}_2\text{O(l)}\) and \(\text{OH}^-\text{(aq)}\) may be added when the equation is balanced. A process engineer mixes \(0.0400\ \text{mol}\) of \(\text{MnO}_4^-\text{(aq)}\) with \(0.0900\ \text{mol}\) of \(\text{SO}_3^{2-}\text{(aq)}\), and the reaction proceeds to completion under basic conditions. What total amount of electrons is transferred by the time the limiting redox reactant is completely consumed?
\[ \text{MnO}_4^-\text{(aq)}+\text{SO}_3^{2-}\text{(aq)}\rightarrow\text{MnO}_2\text{(s)}+\text{SO}_4^{2-}\text{(aq)} \]
The solvent \(\text{H}_2\text{O(l)}\) and \(\text{OH}^-\text{(aq)}\) may be added when the equation is balanced. A process engineer mixes \(0.0400\ \text{mol}\) of \(\text{MnO}_4^-\text{(aq)}\) with \(0.0900\ \text{mol}\) of \(\text{SO}_3^{2-}\text{(aq)}\), and the reaction proceeds to completion under basic conditions. What total amount of electrons is transferred by the time the limiting redox reactant is completely consumed?
Similar Questions
Tools for a 5
AP aligned mock tests to help you get a 5.
With grading, adaptive explanations, and more.
Find a Quiz
Find, solve, and grade every AP FRQ ever.
Find an FRQ
Stuck on AP Chemistry? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Book a SessionSee all our elite tutors
Learn AP Physics from scratch, quickly. This is the only course you'll need for the year.
A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee.
Explore the Course