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Use Avogadro's number.
2 mole Fe(3+) ( 6.022 X 10^23/1 mole Fe(3+) )
= 1.20 X 10^24 ions of Fe(3+)
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∙ 13y ago
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When do you need to use a roman numeral in the name of a compound?
Roman numerals are typically used in compound names to indicate the oxidation state of an element. This is necessary when the element can have multiple oxidation states and is written as a cation in the compound. For example, iron can exist in the +2 or +3 oxidation state, so the compound name "iron(II) chloride" specifies that it is the +2 oxidation state of iron.
Overall redox equation fo MnO4 reacting with Fe2 in acid solution give Mn2 and Fe3?
8H+ + MnO4- + 5Fe2+--> 5Fe3+ + Mn2+ + 4H20
What.........Fe2O3 is named iron (III) oxide because it contains . a. three unpaired electrons c. three iron atoms b. Fe3 plus ions d. O3 plus ions?
b. Fe3 plus ions
What is the name of ionic compound fe2 plus?
ferrous ions and Fe3+ is ferric ion
How can potassium thiocyanate be used to confirm that fe2 plus ions have been oxidized to fe3 plus?
Fe^3+ ion forms the complex with SCN- , forming [FeSCN]2+
What is the individual ions for iron iii and sulfate?
2 Fe3+ and 3 SO42- ions in solution
What is the oxidation number of any monoatomic ions?
The oxidation number of monoatomic ions is the same as their ion charge: +2 in Fe(II) for Fe2+, +3 in Fe(III) for Fe3+, -2 in sulfide S2-
What species has the greatest number of electrons I- or Cu2 plus or Fe3 plus or Au or Hg?
Hg will have 80 electrons.
What is fe3 plus plus cl?
FeCl3
Which element has an oxidation number plus 3?
An example is the ferric ion: Fe(III) or Fe3+.
What is the name of the compound Fe2?
ferrous ions and Fe3+ is ferric ion
What is the name of the ionic compound Fe2?
ferrous ions and Fe3+ is ferric ion
Fe2O3 is named iron 3 oxide because it contains?
Fe3+ ions
How do you find the chemical formula for iron III oxide?
The name iron III oxide shows that you have two types of ion in the compound, the iron III ion (Fe3+) and the oxide ion (O2-). What you need to do is find what ratio to combine the ions in so that the positive and negative charges cancel out to zero. One way of doing this is to switch the numbers of each ion's charge, and assign it to the opposite ion, so in this case you get 2 Fe3+ ions and 3 O2- ions. So the formula is Fe2O3
