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What is the common oxidation state of Chromium in chromates?
What is the common oxidation state of Chromium in chromates?
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Q1
What is the common oxidation state of Chromium in chromates?
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+6
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Chromium commonly exhibits a +6 oxidation state in chromates (CrO4^2-).
Questions & Step-by-step Solutions
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Q: What is the common oxidation state of Chromium in chromates?
Solution:
Chromium commonly exhibits a +6 oxidation state in chromates (CrO4^2-).
Steps: 8
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Step 1: Understand what oxidation state means. It refers to the charge of an atom in a compound.
Step 2: Identify the compound in question, which is chromate (CrO4^2-).
Step 3: Note that in chromate, the overall charge is -2.
Step 4: Recognize that oxygen typically has an oxidation state of -2.
Step 5: Calculate the total oxidation state contributed by the four oxygen atoms: 4 oxygen atoms × -2 = -8.
Step 6: Set up the equation for the total charge: Chromium's oxidation state (x) + total oxygen charge (-8) = overall charge (-2).
Step 7: Solve the equation: x - 8 = -2, which means x = +6.
Step 8: Conclude that the common oxidation state of Chromium in chromates is +6.
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