Question

The overall reaction: $A+B+\frac{3}{2}C\to D$, has three individual reactions

Step $1:A+2B\to E$

Step $2:F\to B+C$

Step $3:?$

Predict the reaction that takes place in Step 3?

• A. $D+F\to C+E$
• B. $E+\frac{5}{2}C\to D+F$
• C. $D+\frac{3}{2}C\to A+E$
• D. $B+C\to F+E$
• E. $A+B+\frac{3}{2}C\to D$

Answer 1

The correct option is B $E+\frac{5}{2}C\to D+F$

The overall reaction: $A+B+\frac{3}{2}C\to D$ has three individual reactions

Step 1: $A+2B\to E$

Step 2: $F\to B+C$

To get an overall reaction the third step should have $E$ at the reactant side and $D$ and $F$ at the product side.

From the given options:

Step 3: $E+\frac{5}{2}C\to D+F$

By adding reactant and product sides of all three reaction

$A+2B+F+E+\frac{5}{2}C\to E+B+C+D+F$

Balancing on either side the overall reaction would be

$A+B+\frac{3}{2}C\to D$