Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

Consider the following reaction, which is endothermic in the forward direction Fe+3(aq) + NCS-(aq) ↔ FeNCS+2 (aq)
               yellow.           colorless      blood red

If Fe+3 can make complex ions with chloride ions and hydrogen phosphate ions, can be reduced by Sn2+ ions, and can precipitate with hydroxide ions (becoming colourless in all cases), what would be the colour of the equilibrium under the condition of the following stressors? (ie. Which way would it shift) 

  1. The addition of HCl

  2. The addition of strong base

  3. The addition of Fe(NO3)3

  4. Heating the solution

  5. Increasing the pressure surrounding the solution

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