For an elementary reaction $$2 A+3 B \rightarrow 4 C+D$$ the rate of appearance of $C$ at time '$$T$$' is $$2.8 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}$$. Rate of disappearance of $$B$$ at '$$t$$' $t$ will be
- A$$\frac{4}{3}\left(2.8 \times 10^{-3}\right) \mathrm{mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}$$
- B$$\frac{3}{4}\left(2.8 \times 10^{-3}\right) \mathrm{mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}$$
- C$$2\left(2.8 \times 10^{-3}\right) \mathrm{mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}$$
- D$$\frac{1}{4}\left(2.8 \times 10^{-3}\right) \mathrm{mol} \mathrm{~L}^{-1} \mathrm{~S}^{-1}$$
✓ Correct answer: B
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