New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Chemistry Week 7

by: Katerina Kushla

Chemistry Week 7 CH 1213

Katerina Kushla
GPA 4.0

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Chapter 4 Part 3 Chemical Reaction Classifications, Stoichiometry, and Quantitative Chemical Analysis Week 7 Sept, 27-29, 2016
Chemistry 1
Dr. Eric Van Dornshuld
Class Notes
25 ?




Popular in Chemistry 1

Popular in Chemistry

This 7 page Class Notes was uploaded by Katerina Kushla on Thursday September 29, 2016. The Class Notes belongs to CH 1213 at Mississippi State University taught by Dr. Eric Van Dornshuld in Fall 2016. Since its upload, it has received 5 views. For similar materials see Chemistry 1 in Chemistry at Mississippi State University.


Reviews for Chemistry Week 7


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/29/16
Chapter 4: Week 7 9/27-29/16 Chapter 4: Stoichiometry of Chemical Reactions Part 3: Reaction Classification and Stoichiometry and Quantitative Analysis Chemical Reaction Names Combination Reaction – two reactants form one product NH (3) + HCl(g)  NH Cl(s) 4 Decomposition Reaction – a reactant decomposes into two or more products  CaCO (s)  CaO(s) + CO (g) 3 2 Combustion Reaction – a reaction where a substance containing C, H, and (sometimes) O is burned in the presence of oxygen to produce only CO 2nd H O2 CH O2l) + O (g) 2 CO (g) + H 2(l) 2 Disproportionation Reaction – a redox reaction that consists of an element that undergoes oxidation and reduction 2H O2(a2)  2H O(l) +2O (g) 2 4.3 Reaction Stoichiometry Stoichiometry – relationships between amounts of reactant and products in a chemical reaction 4Fe(s) + 3O (g)  2Fe O (s) 2 2 3 So to make 6 moles of Fe2O3, 12 moles of solid iron would be required. If you had 9 moles of 3O2and an unlimited amount of Fe, you could make 6 moles of Fe2O 3 Chapter 4: Week 7 9/27-29/16 What mass (in kg) of Fe is required to react with 5.00 kg of O ? 2 Summary of Steps: 1. Balance the chemical equation 2. Convert mass to moles 3. Implement appropriate stoichiometric relationship from equation 4. Convert moles to mass 4.4 – Reaction Yields Limiting Reactant – the reactant that limits the maximum number of product you can make; it is the substance that is to be completely consumed first; once a reaction is completely consumed the reaction stops. Excess Reactant – any reactant that is not the limiting reactant; will be present after a reaction stops Theoretical Yield – the amount of product that may be produced by a reaction under specific conditions as calculated per the stoichiometry of a balanced chemical equation Actual Yield – the amount of product actually (less that the theoretical yield) Percent Yield – the extent to which a reaction’s theoretical yield is achieved; unit-less quantity if actual and theoretical yields are expressed using the same units Chapter 4: Week 7 9/27-29/16 Limiting Reactant Example If you had 2.00 g Fe and 1.55 g O ,2how much product could you make (in g) according to the following chemical equation? How much excess reactant (in g) would be left over? Limiting Reactant (Fe) Excess Reactant (0.672g O ) Fe O (2.87g) 2 2 3 Chapter 4: Week 7 9/27-29/16 Summary of Steps: 1. Convert mass to moles 2. Determine product yields; identify limiting reactant 3. Calculate product mass 4. Find how much excess reactant is consumed and leftover 5. Convert mass to moles Percent Yield Example 3.45 g Fe and excess O 2ere reacted and produced 4.12 g of Fe O 2 3hat is the percent yield? Actual Yield (4.12 g) Theoretical Yield (4.95 g) Percent Yield (83.23%) Summary of Steps: 1. Convert mass to moles 2. Determine theoretical yield (in g); use stoichiometric coefficients 3. Find percent yield Chapter 4: Week 7 9/27-29/16 4.5 – Quantitative Chemical Analysis Quantitative Analysis – the determination of the amount or concentration of a substance in a sample Titration Analysis – quantitative chemical analysis method that involves measuring the volume of a reactant solution required to completely react with the analyte in a sample A buret is filled with a solution with a known concentration of a substance (titrant). The solution is incrementally added to a flask containing a solution with an unknown concentration of some substance (analyte). Once a complete reaction has occurred (equivalence point), the volume of added titrant is recorded (end point). The concentration of the analyte is then calculated. Chapter 4: Week 7 9/27-29/16 Titration Example Titration of a 20.0 mL sample of acid rain required 1.7 mL of 0.0811 M NaOH to reach the end point. The acidity of the rain is due to the presence of sulfuric acid. What was the concentration of the sulfuric acid in this sample of rain? Summary of Steps: 1. Convert volume of NaOH to mmol NaOH 2. Determine mmol H SO f2om 4toichiometric relationship 3. Calculate concentration of H SO2(mo4arity equation) Chapter 4: Week 7 9/27-29/16 Gravimetric Analysis – a technique where a sample is subjected to some treatment that causes a change in the physical state of the analyte that permits its separation from other components in the sample Gravimetric Analysis Example A sample of gallium bromide weighing 0.165 was dissolved in water and treated with silver nitrate resulting in the precipitation of 0.299 g AgBr. Find the percent of Ga (by mass) in the GaBr 3ample. Summary of Steps: 1. Write out a balanced chemical equation 2. Convert mass of AgBr to moles 3. Find moles of GaBr f3om stoichiometric relationship 4. Convert moles to mass 5. Find mass percent


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.