The reaction of potassium chlorate and sucrose is given below: 8 KClO 3 + C 12 H 22 O 11 → 8 KCl + 12 CO 2 + 11 H 2 O If 2.33 x 10 -7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced?

In this practice question, it says, the reaction of potassium chloride and sucrose is given below. So in the equation, we have 8 potassium chlorides reacting with 1 sucrose molecule to produce 8 potassium chlorides, 12 carbon dioxides, and 11 waters. The question says, if 2.33 times 10 to the negative 7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced? Alright. So they're giving us formula units of potassium chloride. So this represents our formula units of given. And then here, they're asking us to find the grams of carbon dioxide. So this is our grams of unknown. Think about the stoichiometric chart. Think about the path we need to take to get to the grams of carbon dioxide. We're starting out with formula units of given, and we know that we're gonna have to convert those into moles of given. Then to go from moles to get of given to moles of unknown, we have to use the jump where we do a mole to mole comparison. Once we do that successfully, we'll have our moles of unknown, which is our carbon dioxide. And then from there, we just need to change those moles of unknown to grams of unknown. So this is the part of the stoichiometric chart that we're going to have to utilize to find our answer. Alright, so let's start out with 2.33 times 10 to the minus 7 formula units of potassium chlorate. Okay? So then we're gonna say, to change formula units into moles, we have to utilize Avogadro's number. So that's 6.022 times 10 to the 23 formula units of Potassium Chlorate. Now, if you don't quite remember the steps necessary to do this, make sure you take a look on our videos where we do molar conversions, where we're going from, ions, atoms, molecules to moles. We have to utilize, Avogadro's number. So look at our videos called the mole concept. So here, formula units cancel out. So now we have moles of given. Next, we have to convert those moles of given into the moles of our unknown, what we're asked to find, which is c o 2. In order to do this, remember, we have to do the jump, which means we use the coefficients in our balanced equation. For every 8 potassium chlorates, we have 12 c o twos. So moles of potassium chloride cancel out. Now I have moles of c o 2. So last step is I convert moles of c o 2 into grams of c o 2. C o two is composed of 1 carbon and 2 oxygens. Their combined mass from the periodic table comes out to 44.01. So based on that, we're going to multiply what's on the top dividing by what's on the bottom. And remember, when you have numbers in scientific notation, make sure you put them in parenthesis in your calculator, otherwise, you may get the incorrect answer. 2.33 has 3 significant figures, so our answer at the end will have 3 unknown. So just remember, stoichiometry can be tricky. But if you set up the stoichiometric chart and follow the steps carefully, you'll be able to isolate your final answer in the end.

Table of contents

Skip topic navigation

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

6. Chemical Reactions & Quantities

Stoichiometry

GOB Chemistry

6. Chemical Reactions & Quantities

Stoichiometry

Previous problemNext problem

Struggling with GOB Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

The reaction of potassium chlorate and sucrose is given below:
8 KClO₃ + C₁₂H₂₂O₁₁ → 8 KCl + 12 CO₂ + 11 H₂O
If 2.33 x 10^-7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced?

3.94x10^-16 g CO₂

8.23x10^-23 g CO₂

2.72x10^-21 g CO₂

7.81x10^-23 g CO₂

2.55x10^-29 g CO₂

Previous problemNext problem

Verified step by step guidance

Identify the balanced chemical equation: 8 KClO3 + C12H22O11 → 8 KCl + 12 CO2 + 11 H2O. This tells us the stoichiometric relationship between reactants and products.

Determine the molar ratio between potassium chlorate (KClO3) and carbon dioxide (CO2) from the balanced equation. For every 8 moles of KClO3, 12 moles of CO2 are produced.

Convert the given number of formula units of KClO3 to moles. Use Avogadro's number (6.022 x 10^23 formula units/mol) to perform this conversion.

Use the stoichiometric ratio from step 2 to calculate the moles of CO2 produced from the moles of KClO3 obtained in step 3.

Convert the moles of CO2 to grams using the molar mass of CO2 (approximately 44.01 g/mol). This will give you the mass of CO2 produced.

1:16m

Watch next

Master Stoichiometry with a bite sized video explanation from Jules

Start learning

Related Videos

Related Practice

Textbook Question

Although Cu is not sufficiently active to react with acids, it can be dissolved by concentrated nitric acid, which functions as an oxidizing agent according to the following equation:

Cu(s) + 4 HNO₃(aq) → Cu(NO₃)₂(aq) + 2 NO₂(g) + 2 H₂O(l)

b. Is 35.0 g of HNO3 sufficient to dissolve 5.00 g of copper?

1308

views

Textbook Question

Ethyl alcohol is formed by enzyme action on sugars and starches during fermentation.

C₆H₁₂O₆ → 2 CO₂ + 2 C₂H₆O

If the density of ethyl alcohol is 0.789 g/mL, how many quarts can be produced by the fermentation of 100.0 lb of sugar?

The oxidation of chromium solid is represented by the following equation:

4 Cr (s) + 3 O₂ (g) → 2 Cr₂O₃ (s)

How many moles of chromium (III) oxide are produced when 34.69 g Cr reacts with excess oxygen gas?

If the density of ethanol, CH₃CH₂OH, is 0.789 g/mL, how many milliliters of ethanol are needed to produce 4.8 g of H₂O in the following reaction?

CH₃CH₂OH (l) + 3 O₂ (g) → 3 H₂O (l) + 2 CO₂ (g)

How many moles of NiCl₂ can be formed in the reaction of 6.00 mol of Ni and 12.0 mol of HCl?

Ni(s) + HCl(aq) → NiCl₂(aq) + H₂(g)

1522

views

Textbook Question

Balance the following equation, and tell how many moles of nickel will react with 9.81 mol of hydrochloric acid.

Ni(s) + HCl(aq) → NiCl₂(aq) + H₂(g)

1240

views

Textbook Question

The following diagram represents the reaction of A₂(red spheres) with B₂(blue spheres):

<IMAGE>

b. How many moles of product can be made from 1.0 mol of A₂? From 1.0 mol of B₂?

1373

views

Show more practices

Stoichiometry practice set

Problem sets built by lead tutors

Expert video explanations

Go to Practice

Download the Mobile app

Privacy

Do not sell my personal information

Accessibility

Patent notice

Sitemap

Struggling with GOB Chemistry?

The reaction of potassium chlorate and sucrose is given below:8 KClO3 + C12H22O11 → 8 KCl + 12 CO2 + 11 H2OIf 2.33 x 10-7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced?

Watch next

Stoichiometry practice set

The reaction of potassium chlorate and sucrose is given below:
8 KClO₃ + C₁₂H₂₂O₁₁ → 8 KCl + 12 CO₂ + 11 H₂O
If 2.33 x 10^-7 formula units of potassium chlorate are reacted, how many grams of carbon dioxide will be produced?