For a hypothetical reaction; A→L, the rate expression is, rate = -dCAdt
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a
Negative sign represents that rate is negative
b
Negative sign pertains to the decrease in the concentrations of reactant
c
Negative sign indicates the attractive forces between reactants
d
All of the above are correct
answer is B.
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Detailed Solution
Since concentration of reactants decreases with time negaive sign must be used to represent rate of reactantsNote: Rate of a reaction can never be negativeFor the reaction, N2 + 3H2 → 2NH3