Exam (elaborations)
Chem 116 Final Exam Questions & Correct Verified Answers| Already Passed
- Course
- Institution
Chem 116 Final Exam Questions & Correct Verified Answers| Already Passed
[Show more]
Seller
Follow
Content preview
Chem 116 Final Exam Questions &Correct Verified Answers| Already
Passed
What is a rate-determining step, and how does it affect kinetic calculations?
The rate determining step is the slowest step of a chemical reaction that determines the
speed (rate) at which the overall reaction proceeds.
Assume the elementary steps for this reaction are the following:
Step 1: Slow A+A→C+E
(with a rate constant, k1)
Step 2: Fast E+B→A+D
(with a rate constant, k2)
Step 1 would be the rate determining step
How is a rate law different from an equilibrium constant?
Rate constant is the rate of conversion of reactants into products. It's measured in moles per
sec. Whereas, equilibrium constant is the ratio of concentration of products to concentration
of reactants. It has no unit.
How would you correctly write an equilibrium constant?
The equilibrium constant expression is the ratio of the concentrations of the products over the
reactants.
, What is the definition of an equilibrium?
a state in which opposing forces or influences are balanced.
What is the solubility product? How would you write out an equation for the
solubility product,
and be able to solve for the concentration of the products?
What is Le Châtelier's Principle? How can you use this principle to know which way
an equilibrium will shift under different conditions?
the principle that if a system in chemical equilibrium is subjected to a disturbance it tends
to change in a way that opposes this disturbance. You can use it to see if the concentrations
change which way the reaction is going to want to go to get back to equilibrium.
What is a reaction quotient? How is it different from an equilibrium constant?
What is true at equilibrium about the rates of the forward and reverse reaction?
The rates of the forward the reverse reactions should be equal at equilibrium.
What is the only variable that can change the equilibrium constant of a reaction?
temperature is the only variable that can change the equilibrium constant of a reaction
how to calculate the pH of a solution using ICE tables and acid dissociation constants
solve the ICE box to find the concentrations then plug that value into the pH equation.
How would you solve for pH if given the concentration of an acid or base?
If the acid is a weak acid you would use an ICE box to solve for the concentration at equilibrium
then plug it into the pH equation. If it's a strong acid or base you can plug it in to the equation:
pH=-log(concentration)
What is a titration? What are the various types of titrations?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now