alleryStart learning →A reversible reaction run in a closed system usually gives what yield of products?
AExactly 100 percent, with no reactant left
BLess than 100 percent, with reactant left over
CExactly 50 percent, whatever the conditions
DA yield that keeps rising without any limit
Answer & Solution
Correct answer: B. Less than 100 percent, with reactant left over
1. In a closed system the products cannot leave, so the reverse reaction can proceed.
2. The mixture settles at a point where some reactant is still present alongside product.
3. The yield is therefore short of 100 percent, and a mixture is found at equilibrium.
4. Nothing forces the split to be 50 percent, so that value is an invented figure.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 13 "Fundamental Equilibrium Concepts", section 13.1 Chemical Equilibria_
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