In a Chemical Reaction a and B Reacts to Become

question 21

Multiple Choice

In a chemical reaction A and B reacts to become E. C and D are the intermediaries of this reaction. The percent yields of the reaction are given below. What is the overall percent yield? A+B→C (Percent yield=70%)
C→D (Percent yield=90%)
D→E(Percent yield=50%)

• A) 210%
• B) 50%
• C) 90%
• D) 70%
• E) 31.5%

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