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Stoichiometry

Stoichiometry. Stoichiometry comes from the Greek words for “element” and “measure”. Stoichiometry takes information for one element/compound in a reaction and allows for the calculation of the amount of a different element/compound in the same reaction. Obviously the place to start is….

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Stoichiometry

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  1. Stoichiometry

  2. Stoichiometry comes from the Greek words for “element” and “measure”. Stoichiometry takes information for one element/compound in a reaction and allows for the calculation of the amount of a different element/compound in the same reaction. Obviously the place to start is…

  3. Predict and write a balanced chemical equation.

  4. Predict and write a balanced chemical equation. Start a RR track and convert the given information to moles (if not already as moles).

  5. Predict and write a balanced chemical equation. • Start a RR track and convert the given information to moles (if not already as moles). • Use the molar mass (from the PT) to change grams → moles

  6. Predict and write a balanced chemical equation. • Start a RR track and convert the given information to moles (if not already as moles). • Use the molar mass (from the PT) to change grams → moles • Use 6.022 x 1023 to change atoms/molecules/formula units → moles

  7. Predict and write a balanced chemical equation. • Start a RR track and convert the given information to moles (if not already as moles). • Use the molar mass (from the PT) to change grams → moles • Use 6.022 x 1023 to change atoms/molecules/formula units → moles • Use 22.4 L (for gases only) to change L → moles

  8. Predict and write a balanced chemical equation. • Start a RR track and convert the given information to moles (if not already as moles). • Use the molar mass (from the PT) to change grams → moles • Use 6.022 x 1023 to change atoms/molecules/formula units → moles • Use 22.4 L (for gases only) to change L → moles • For water and dilute solutions, 1 mL = 1 g

  9. Convert the moles of the given to moles of the unknown using the mole ratio from the balanced chemical equation • Mole # of unknown • Mole # of known

  10. Convert the moles of the given to moles of the unknown using the mole ratio from the balanced chemical equation • Mole # of unknown • Mole # of known • 4. Convert the moles of the unknown to the desired unit (see possible conversion factors in step 2)

  11. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1:

  12. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2

  13. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid

  14. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid

  15. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid

  16. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid

  17. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid

  18. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  19. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  20. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  21. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  22. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  23. Example: 1.00 x 102 g of Potassium reacts with phosphoric acid, each time start from the beginning Step 1: 2H3PO4 + 6K → 2K3PO4 + 3H2 Find the moles of phosphoric acid Find the mass of phosphoric acid

  24. Find the formula units of phosphoric acid

  25. Find the formula units of phosphoric acid

  26. Find the formula units of phosphoric acid

  27. Find the formula units of phosphoric acid

  28. Find the formula units of phosphoric acid

  29. Find the formula units of phosphoric acid

  30. Find the formula units of phosphoric acid Find the moles of potassium phosphate

  31. Find the formula units of phosphoric acid Find the moles of potassium phosphate

  32. Find the formula units of phosphoric acid Find the moles of potassium phosphate

  33. Find the formula units of phosphoric acid Find the moles of potassium phosphate

  34. Find the formula units of phosphoric acid Find the moles of potassium phosphate

  35. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  36. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  37. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  38. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  39. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  40. Find the formula units of phosphoric acid Find the moles of potassium phosphate Find the mass of potassium phosphate

  41. Find the mass of the hydrogen

  42. Find the mass of the hydrogen

  43. Find the mass of the hydrogen

  44. Find the mass of the hydrogen

  45. Find the mass of the hydrogen

  46. Find the mass of the hydrogen

  47. Find the mass of the hydrogen Find the liters of hydrogen

  48. Find the mass of the hydrogen Find the liters of hydrogen

  49. Find the mass of the hydrogen Find the liters of hydrogen

  50. Find the mass of the hydrogen Find the liters of hydrogen

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