LARN 167 C42D3

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LARN 167 C42D3 Start the following in class: 1.  For your journal today, J167A, you are to show how to use oxidation numbers and the single atom ratio method to balance four chemical expressions.  In your journal notebook, on the first blue line title this assignment Redox Problems.  a, b, c, and d. For each of problem, record the oxidation number for each atom in each species on a short line segment drawn above the elements symbol in each formula given in the initial and final states of the chemical expression. record the reduction half reaction and the oxidation half reaction for the transfer of equal numbers of electrons. record the oxidizing agent, the reducing agent, and the atom ratio that could be used to balance the chemical expression. Then balance the chemical expression. Use the single atom ratio method to balance the following expressions as explained in the following notes: Correctly copy the formula and phase of each reactant and product in the...
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LARN 166 C42D2

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LARN 166 C42D2 Start the following in class: 1.  For the first part of today's journal entry, J166A, assign oxidation numbers to each single atom of each chemical species in chemical expressions a and b given below and then show how those oxidation numbers can be used to balance the chemical expressions.  A page in your learning packet has space for you to show your work for these two problems, or you can do problems a and b in your journal notebook. __ __                      __                             __ __                  __ a.  __ Fe2O3(s)     + __ C(s)       →        __ CO(g)     +  __  Fe(s)                      __ __                     __ __           ...
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LARN 165 C42D1

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LARN 165 C42D1 Your Goal: Your goal today should be to begin to learn the SINGLE ATOM RATIO method of balancing chemical expressions using oxidation numbers is explained with step by step examples on the ActivInspire flipchart for Oxidation and Reduction.  Reading section 20.3 and studying the change in oxidation number method will also add to your understanding.  [Please do NOT spend time reading or studying what your text calls the half reaction method and what other texts call the ion-electron method.  Wherever the text asks you to do an example using that method use the single atom ratio method instead!!]  To learn use any using oxidation numbers you will need to be able to assign the quickly and accurately so start out by reviewing the four rules and six priorities for assigning oxidation numbers assigned in LARN 163, and LARN 164.  Then move on to assigning oxidation numbers to each single atom in the assigned unbalanced chemical expressions and use one...
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