GATE ME 2017 Set 2 — Question 22
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Engineering Materials → Structure & Properties → Iron-Carbon Diagram
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Question
Given the atomic weight of is 56 and that of is 12, the weight percentage of carbon in cementite () is ________
Correct answer
6.3 to 7
Solution
Cementite is an intermetallic compound of iron and carbon with the chemical formula .Given:
Atomic weight of Iron () = 56
Atomic weight of Carbon () = 12Step 1: Calculate the molecular weight of cementite ():Step 2: Calculate the weight percentage of carbon:The calculated value 6.67% falls within the official range of 6.3 to 7.0.
Atomic weight of Iron () = 56
Atomic weight of Carbon () = 12Step 1: Calculate the molecular weight of cementite ():Step 2: Calculate the weight percentage of carbon:The calculated value 6.67% falls within the official range of 6.3 to 7.0.
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