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Redox Stoichiometry

Redox Stoichiometry. A redox reaction can be used along with the stoichiometric method in order to predict the quantity of chemical involved in a chemical reaction. Redox Stoichiometry involves several assumptions:. Reactions are spontaneous Reactions are fast / immediate

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Redox Stoichiometry

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  1. Redox Stoichiometry • A redox reaction can be used along with the stoichiometric method in order to predict the quantity of chemical involved in a chemical reaction.

  2. Redox Stoichiometry involves several assumptions: • Reactions are spontaneous • Reactions are fast / immediate • Reactions are quantitative (>99%) • Reactions occur in stoichiometric ratios

  3. Steps for Redox Stoichiometry • Write a balanced redox chemical equation • Convert the given measurement to moles • Calculate the moles of the required substance using the balanced equation • Convert the calculated moles to the required quantity using the appropriate conversion factor • Check your answer!

  4. Redox Titrations • used to determine the concentrations of substances in a solution. • the progressive addition of one reagent to another until an endpoint is reached. • the endpoint is indicated by a color change, often due to ion colors in solution • Ex) • the measured quantity taken when the endpoint occurs is called the equivalence point.

  5. substance in the buretteis called the titrant. • A standard solution(concentration is known) is used in the titration

  6. Redox Titration Beginning Endpoint

  7. Example: Problem: What is the concentration of a potassium permanganate solution? Design: In order to standardize a freshly prepared sample of potassium permanganate, it is titrated against samples of acidic tin(II)chloride solution. The tin(II)chloride is the primary standard. Titration of 10.00 mL of 0.200 mol/L acidified tin(II) solution with KMnO4(aq)

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