For the first order consecutive reaction : Which of the following statement is incorrect ?
[B] is always greater than [C]
In a consecutive first-order scheme the intermediate B is formed from A and consumed to give C, so each species has a characteristic time profile. The question asks which description does not match.
"[B] is always greater than [C]" is the incorrect statement. B is an intermediate: it starts at zero, rises to a maximum, then falls back towards zero as it is converted onward. C is the final product: it starts at zero and rises monotonically towards the full initial amount of A. The two curves must therefore cross. At long times essentially all the material ends up as C while B has been consumed, so [C] greatly exceeds [B]. The claim holds only in the earliest part of the reaction, never "always".
"[A] decreases exponentially with time" is correct. A is consumed by a simple first-order step unaffected by anything downstream, so \([A] = [A]_0 e^{-k_1 t}\).
"[C] increases with an inverse exponential function" is correct in the sense meant — C follows a rising, saturating curve of the form \(1 - e^{-kt}\) terms, approaching \([A]_0\) asymptotically. Its curve is also sigmoidal at early times, showing an induction period while B accumulates.
"tmax depends on K1 and K2" is correct. Setting \(\frac{d[B]}{dt} = 0\) gives \(t_{max} = \frac{\ln(k_2/k_1)}{k_2 - k_1}\), which manifestly involves both rate constants.
Hence the incorrect statement is that [B] is always greater than [C].
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A. Energy flows from higher concentration to lower concentration.
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C. The quality of energy degrades as it is transformed.
D. Degraded energy is entropy, dessipated as waste products or heat.
E. Enthalpy is wasted in energy transformation.
Choose the most appropriate answer from the options given below: Choose the Incorrect Statement:
1 For a system at equilibrium, chemical potential is same in all phases.
2 Gibb's free energy change is zero at equilibrium state of a system.
3 Gibb's free energy change is positive for reaction to occur spontaneously.
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Which one among the following statements with reference to the properties of water is not correct?
