Exam (elaborations)
Redox Titrations Questions and Answers 2024
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Exam of 1 pages for the course Semmelweis Entrance at Semmelweis Entrance (Redox Titrations)
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Redox Titrationswhat are the two common oxidation states for iron? - answerFe2+ and Fe3+
why is Fe(II) less stable than Fe(III)? - answerin the presence of air, or when in contact
with another oxidising agent, iron(II) is readily oxidised to iron(III)
which are the two most important oxidation states of manganese? - answer+2 and +7
give a manganese compound that is a strong oxidising agent - answerMnO4-
under what conditions can MnO4- be reduced to form Mn2+? - answeracidic solution
often with sulfuric acid
give the reaction for iron(II) and acidified manganate(VII) - answerMnO4-(aq) + 8H+(aq)
+ 5Fe2+(aq) -> Mn2+(aq) + 5Fe3+(aq) + 4H2O(l)
what can redox reactions be used for in transition element chemistry? - answerto
estimate the concentration of a transition metal ion in an unknown solution, or to
calculate the percentage composition of a metal in a solid sample of an unknown
compound or alloy
what is the colour change from MnO4- to Mn2+? - answerpurple to colourless
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