Atom economy is a measure of how efficiently a chemical reaction converts reactants into desired products. It is expressed as a percentage and is calculated using the formula:
Atom Economy
=(| Molecular weight of the desired product |
| Total molecular weight of reactants |
)×100%In the given problem, we have a product with a formula weight of
175u that is obtained from a reactant with a formula weight of
225u. Using the formula for atom economy, we can calculate:
Atom Economy
=()×100% In the given problem, we have a product with a formula weight of
175u that is obtained from a reactant with a formula weight of
225u. Using the formula for atom economy, we can calculate:
Atom Economy
=()×100%Now, divide 175 by 225 to find the value:
Atom Economy
=()×100% Atom Economy
=0.7777...×100%Atom Economy
=77.77...% Rounding to one decimal place, the atom economy is approximately
77.8%. Among the options given, the closest answer is:
Option B
77.7%Hence, option B is the correct answer.