Respuesta :
I believe the answer you are looking for is 0.40Eq
In your example, you're dealing with a potassium cation,
K
+
. This ion carries a
1
+
charge, so right from the start you know that you're looking for the number of
1
−
ions, i.e. monovalent ions of opposite charge, needed to neutralize this
1
+
charge.
Since a charge of
1
+
can be neutralized by a charge of
1
−
, it follows that every mole of potassium cations will produce
1
mole of equivalents in solution.
In your example, you're dealing with a potassium cation,
K
+
. This ion carries a
1
+
charge, so right from the start you know that you're looking for the number of
1
−
ions, i.e. monovalent ions of opposite charge, needed to neutralize this
1
+
charge.
Since a charge of
1
+
can be neutralized by a charge of
1
−
, it follows that every mole of potassium cations will produce
1
mole of equivalents in solution.
The number of the ions or the electrons transferable is called the number of equivalents. The number of equivalents of 0.70-mole iron (Fe³⁺) is 2.1 eq.
What is the number of equivalents?
The number of equivalents is the property of the atom, molecule, or compound to transfer its ions or electrons in a chemical reaction. The equivalents can be said to be the moles of the ions with a valency of one to neutralize the oppositely charged species.
The number of equivalents is calculated as,
Number of equivalents = number of moles × valence
Given,
Valency of iron (Fe³⁺) = +3
Number of moles of iron = 0.70 moles
Substituting values above to calculate equivalents as
Number of equivalents = 0.7 × 3
Number of equivalents = 2.1 eq
Therefore, there are 2.1 equivalents in 0.70 moles of iron.
Learn more about equivalents here:
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