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JEE Main levelOne or more correct optionsDifficulty 2 of 3ck219

For the reaction $2 A + B 3 C + D$ , A is consumed at $0.30 M s^{- 1}$ at a certain instant. Select the correct statement(s).

AThe rate of reaction, defined as $\frac{1}{ν _{i}} \frac{d [ i ]}{d t}$ with signed $ν_{i}$ , is $0.30 M s^{- 1}$ .
BC is formed at $0.45 M s^{- 1}$ .
CB is consumed at $0.15 M s^{- 1}$ .
DD is formed at $0.45 M s^{- 1}$ .

Answer: B, C

The rate of reaction is

ξ

-dot

= - \frac{1}{2} d [A] / d t

and equals

0.30/2 = 0.15 M s^{- 1}

. Hence B is consumed at 0.15 (coefficient 1), C is formed at

3 \times 0.15 = 0.45

, D at 0.15 (coefficient 1), so only the first two statements hold.

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