Empirical Formula Empirical Formula The empirical formula of
![Empirical Formula Empirical Formula](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-1.jpg)
![Empirical Formula �The empirical formula of a chemical compound is the simplest whole number Empirical Formula �The empirical formula of a chemical compound is the simplest whole number](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-2.jpg)
![Empirical Formula vs Molecular Formula – Tyler De. Witt Empirical Formula vs Molecular Formula – Tyler De. Witt](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-3.jpg)
![Calculating Empirical Formula �The empirical formula can be determined experimentally. �If you are able Calculating Empirical Formula �The empirical formula can be determined experimentally. �If you are able](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-4.jpg)
![Calculating Empirical Formula (page 290 -) � Start with the number of grams of Calculating Empirical Formula (page 290 -) � Start with the number of grams of](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-5.jpg)
![Empirical Formula Calculations – Melissa Maribel Empirical Formula Calculations – Melissa Maribel](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-6.jpg)
![Sample Problem #1 A compound was analyzed and found to contain 13. 5 g Sample Problem #1 A compound was analyzed and found to contain 13. 5 g](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-7.jpg)
![Answer Answer](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-8.jpg)
![Sample Problem #2 �Nutra. Sweet is 57. 14% C, 6. 16% H, 9. 52% Sample Problem #2 �Nutra. Sweet is 57. 14% C, 6. 16% H, 9. 52%](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-9.jpg)
![Answer C 14 H 18 N 2 O 5 This is the empirical formula. Answer C 14 H 18 N 2 O 5 This is the empirical formula.](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-10.jpg)
![Homework �Read section 6. 7 in the textbook. �Pg 292 #1 �Pg 293 #4, Homework �Read section 6. 7 in the textbook. �Pg 292 #1 �Pg 293 #4,](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-11.jpg)
- Slides: 11
![Empirical Formula Empirical Formula](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-1.jpg)
Empirical Formula
![Empirical Formula The empirical formula of a chemical compound is the simplest whole number Empirical Formula �The empirical formula of a chemical compound is the simplest whole number](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-2.jpg)
Empirical Formula �The empirical formula of a chemical compound is the simplest whole number ratio of atoms of each element present in a compound. �An ionic compound’s formula (also called formula units) are usually given in lowest ratios of ions and therefore technically an empirical formula. �The molecular formula identifies the actual number of each type of atom in a molecule.
![Empirical Formula vs Molecular Formula Tyler De Witt Empirical Formula vs Molecular Formula – Tyler De. Witt](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-3.jpg)
Empirical Formula vs Molecular Formula – Tyler De. Witt
![Calculating Empirical Formula The empirical formula can be determined experimentally If you are able Calculating Empirical Formula �The empirical formula can be determined experimentally. �If you are able](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-4.jpg)
Calculating Empirical Formula �The empirical formula can be determined experimentally. �If you are able to determine the mass of each element within a compound, the particle ratio of each element can be determined using our knowledge of mass and moles. �This is usually done using a combustion analysis as seen with % composition calculations.
![Calculating Empirical Formula page 290 Start with the number of grams of Calculating Empirical Formula (page 290 -) � Start with the number of grams of](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-5.jpg)
Calculating Empirical Formula (page 290 -) � Start with the number of grams of each element, given in the problem. If percentages are given, assume that the total mass is 100 grams, this easily converts the % to mass. � Convert the mass of each element to moles using the molar mass from the periodic table. n=m/M � Divide the mole value for each element by the smallest number of moles calculated. � Round to the nearest whole number if close to a whole number. This is the particle ratio of the elements and is represented by subscripts in the empirical formula. � If the number is too far to round (x. 1 ~ x. 9), then multiply each by a factor to convert them to whole numbers. Example: 0. 5 multiply by 2, 0. 25 multiply by 4, etc
![Empirical Formula Calculations Melissa Maribel Empirical Formula Calculations – Melissa Maribel](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-6.jpg)
Empirical Formula Calculations – Melissa Maribel
![Sample Problem 1 A compound was analyzed and found to contain 13 5 g Sample Problem #1 A compound was analyzed and found to contain 13. 5 g](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-7.jpg)
Sample Problem #1 A compound was analyzed and found to contain 13. 5 g Ca, 10. 8 g O, and 0. 675 g H. What is the empirical formula of the compound? Ca : O : H 13. 5 g : 10. 8 g : 0. 675 g 40. 078 g/mol : 15. 999 g/mol : 1. 008 g/mol 0. 33684 mol : 0. 67504 mol : 0. 66964 mol 0. 33684 mol 1 : 2
![Answer Answer](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-8.jpg)
Answer
![Sample Problem 2 Nutra Sweet is 57 14 C 6 16 H 9 52 Sample Problem #2 �Nutra. Sweet is 57. 14% C, 6. 16% H, 9. 52%](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-9.jpg)
Sample Problem #2 �Nutra. Sweet is 57. 14% C, 6. 16% H, 9. 52% N, and 27. 18% O. Calculate the empirical formula of Nutra. Sweet.
![Answer C 14 H 18 N 2 O 5 This is the empirical formula Answer C 14 H 18 N 2 O 5 This is the empirical formula.](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-10.jpg)
Answer C 14 H 18 N 2 O 5 This is the empirical formula. What is the chemical formula for Nutra. Sweet? Pub. Chem - Aspartame
![Homework Read section 6 7 in the textbook Pg 292 1 Pg 293 4 Homework �Read section 6. 7 in the textbook. �Pg 292 #1 �Pg 293 #4,](https://slidetodoc.com/presentation_image_h2/8ee593aeace1d42cfb10ca7e570770ad/image-11.jpg)
Homework �Read section 6. 7 in the textbook. �Pg 292 #1 �Pg 293 #4, 9 �Take the Check Your Understanding Quiz