EMPIRICAL FORMULA VS MOLECULAR FORMULA EMPIRICAL FORMULA VS
![EMPIRICAL FORMULA VS. MOLECULAR FORMULA EMPIRICAL FORMULA VS. MOLECULAR FORMULA](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-1.jpg)
![EMPIRICAL FORMULA VS. MOLECULAR FORMULA � Empirical Formula: the simplest whole number ratio of EMPIRICAL FORMULA VS. MOLECULAR FORMULA � Empirical Formula: the simplest whole number ratio of](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-2.jpg)
![Empirical vs. Molecular � Identify the following as molecular or empirical. � CH 6 Empirical vs. Molecular � Identify the following as molecular or empirical. � CH 6](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-3.jpg)
![Calculating Empirical Formulas � Use the following poem to remember the steps: "Percent to Calculating Empirical Formulas � Use the following poem to remember the steps: "Percent to](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-4.jpg)
![Calculating Empirical Formulas �Example #1: Find the empirical formulas for a compound with 13. Calculating Empirical Formulas �Example #1: Find the empirical formulas for a compound with 13.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-5.jpg)
![Example #1 Continue �Step 2: Convert the mass of each element to moles using Example #1 Continue �Step 2: Convert the mass of each element to moles using](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-6.jpg)
![Example #1 Continue �Step 3: Divide each mole value by the smallest mole value. Example #1 Continue �Step 3: Divide each mole value by the smallest mole value.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-7.jpg)
![Example #1 Continue �Step 4: If CLOSE, Round to the nearest whole number. �If Example #1 Continue �Step 4: If CLOSE, Round to the nearest whole number. �If](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-8.jpg)
![Example #1 Continue � Step 5: Write Empirical Formula using answers as the subscripts. Example #1 Continue � Step 5: Write Empirical Formula using answers as the subscripts.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-9.jpg)
![Calculating Empirical Formulas � Example #2: Determine the empirical formula for a compound composed Calculating Empirical Formulas � Example #2: Determine the empirical formula for a compound composed](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-10.jpg)
![Calculating Empirical Formulas � Example � 57. 4% #3 Carbon � 6. 16% Hydrogen Calculating Empirical Formulas � Example � 57. 4% #3 Carbon � 6. 16% Hydrogen](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-11.jpg)
![Calculating Molecular Formulas � Step 1: Find the molar mass of the empirical formula. Calculating Molecular Formulas � Step 1: Find the molar mass of the empirical formula.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-12.jpg)
![Calculating Molecular Formulas � Example #1: What is the molecular formula of a compound Calculating Molecular Formulas � Example #1: What is the molecular formula of a compound](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-13.jpg)
![Calculating Molecular Formulas � Example #2: What is the molecular formula of CH 3 Calculating Molecular Formulas � Example #2: What is the molecular formula of CH 3](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-14.jpg)
![Calculating Molecular Formulas � Example #3: Find the molecular formula for a compound with Calculating Molecular Formulas � Example #3: Find the molecular formula for a compound with](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-15.jpg)
![Which of the following is an empirical formula? A. C 3 H 6 Which of the following is an empirical formula? A. C 3 H 6](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-16.jpg)
- Slides: 16
![EMPIRICAL FORMULA VS MOLECULAR FORMULA EMPIRICAL FORMULA VS. MOLECULAR FORMULA](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-1.jpg)
EMPIRICAL FORMULA VS. MOLECULAR FORMULA
![EMPIRICAL FORMULA VS MOLECULAR FORMULA Empirical Formula the simplest whole number ratio of EMPIRICAL FORMULA VS. MOLECULAR FORMULA � Empirical Formula: the simplest whole number ratio of](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-2.jpg)
EMPIRICAL FORMULA VS. MOLECULAR FORMULA � Empirical Formula: the simplest whole number ratio of atoms in a compound. � Molecular Formula: shows how many atoms of each element are present in a molecule or compound.
![Empirical vs Molecular Identify the following as molecular or empirical CH 6 Empirical vs. Molecular � Identify the following as molecular or empirical. � CH 6](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-3.jpg)
Empirical vs. Molecular � Identify the following as molecular or empirical. � CH 6 Empirical � C 2 H 2 Molecular � C 12 H 6 Molecular � C 2 H 4 O Empirical � C 8 H 8 S 4 Molecular
![Calculating Empirical Formulas Use the following poem to remember the steps Percent to Calculating Empirical Formulas � Use the following poem to remember the steps: "Percent to](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-4.jpg)
Calculating Empirical Formulas � Use the following poem to remember the steps: "Percent to mass, Mass to moles, Divide by small, Multiply ‘til whole"
![Calculating Empirical Formulas Example 1 Find the empirical formulas for a compound with 13 Calculating Empirical Formulas �Example #1: Find the empirical formulas for a compound with 13.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-5.jpg)
Calculating Empirical Formulas �Example #1: Find the empirical formulas for a compound with 13. 5% of calcium, 10. 8% oxygen, 0. 675% of hydrogen. �Step 1: If the element is given in a percent, assume 100 g. � 13. 5% Ca = 13. 5 g Ca � 10. 8% O = 10. 8 g O � 0. 675% H = 0. 675 g H
![Example 1 Continue Step 2 Convert the mass of each element to moles using Example #1 Continue �Step 2: Convert the mass of each element to moles using](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-6.jpg)
Example #1 Continue �Step 2: Convert the mass of each element to moles using the molar mass.
![Example 1 Continue Step 3 Divide each mole value by the smallest mole value Example #1 Continue �Step 3: Divide each mole value by the smallest mole value.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-7.jpg)
Example #1 Continue �Step 3: Divide each mole value by the smallest mole value. �Smallest mole value = 0. 337
![Example 1 Continue Step 4 If CLOSE Round to the nearest whole number If Example #1 Continue �Step 4: If CLOSE, Round to the nearest whole number. �If](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-8.jpg)
Example #1 Continue �Step 4: If CLOSE, Round to the nearest whole number. �If answer is NOT close to a whole number, you will need to multiply by a factor of 2 or 3. � If answer ends with. 5, multiply by 2. � If answer ends with. 3 or. 6, multiply by 3. �You MUST multiply EACH element by the factor! �Example �Ca #1 Continue =1 �O = 2. 0029 = 2 �H = 1. 9881 = 2
![Example 1 Continue Step 5 Write Empirical Formula using answers as the subscripts Example #1 Continue � Step 5: Write Empirical Formula using answers as the subscripts.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-9.jpg)
Example #1 Continue � Step 5: Write Empirical Formula using answers as the subscripts. � Ca. O 2 H 2 = Ca(OH)2
![Calculating Empirical Formulas Example 2 Determine the empirical formula for a compound composed Calculating Empirical Formulas � Example #2: Determine the empirical formula for a compound composed](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-10.jpg)
Calculating Empirical Formulas � Example #2: Determine the empirical formula for a compound composed of 40. 00% C, 6. 72% H, and 53. 29% O.
![Calculating Empirical Formulas Example 57 4 3 Carbon 6 16 Hydrogen Calculating Empirical Formulas � Example � 57. 4% #3 Carbon � 6. 16% Hydrogen](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-11.jpg)
Calculating Empirical Formulas � Example � 57. 4% #3 Carbon � 6. 16% Hydrogen � 9. 52% Nitrogen � 27. 18% Oxygen
![Calculating Molecular Formulas Step 1 Find the molar mass of the empirical formula Calculating Molecular Formulas � Step 1: Find the molar mass of the empirical formula.](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-12.jpg)
Calculating Molecular Formulas � Step 1: Find the molar mass of the empirical formula. � Step 2: Divide the molecular mass by the empirical mass (big number by small number) � Step 3: Multiply answer by each subscript in the empirical formula to get molecular formula.
![Calculating Molecular Formulas Example 1 What is the molecular formula of a compound Calculating Molecular Formulas � Example #1: What is the molecular formula of a compound](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-13.jpg)
Calculating Molecular Formulas � Example #1: What is the molecular formula of a compound whose molar mass is 60. 0 g/mol and empirical formula is CH 4 N?
![Calculating Molecular Formulas Example 2 What is the molecular formula of CH 3 Calculating Molecular Formulas � Example #2: What is the molecular formula of CH 3](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-14.jpg)
Calculating Molecular Formulas � Example #2: What is the molecular formula of CH 3 O if its molar mass is 62 g/mol?
![Calculating Molecular Formulas Example 3 Find the molecular formula for a compound with Calculating Molecular Formulas � Example #3: Find the molecular formula for a compound with](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-15.jpg)
Calculating Molecular Formulas � Example #3: Find the molecular formula for a compound with an empirical formula of C 2 H 8 N and a molecular mass of 46 grams per mole.
![Which of the following is an empirical formula A C 3 H 6 Which of the following is an empirical formula? A. C 3 H 6](https://slidetodoc.com/presentation_image_h/cb2b43b9f38c25935749c1a5d2c937e2/image-16.jpg)
Which of the following is an empirical formula? A. C 3 H 6 B. C 2 H 8 C. CH 4 D. C 4 H 10
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