In the reaction, H2 + I2 arrow 2HI, what is the rate of appearance of HI, if rate of disappearance of H2 is 10-6 mol L-1 s-1 ?

Question

In the reaction, H2 + I2 arrow 2HI, what is the rate of appearance of HI, if rate of disappearance of H2 is 10-6 mol L-1 s-1 ? (A) 10-6 mol L-1 s-1  (B) 2 × 10-6 mol L -1 s -1 (C) 0.5 × 10-6 mol L -1 s -1 (D) 10-7 mol L -1 s -1

Tardigrade Admin · Accepted Answer

-(d[H2]/dt) =(1/2) (d[HI]/dt) -(d[HI]/dt) =2×10-6 mol L-1 s-1

Q. In the reaction, $H_{2} + I_{2} \to 2 H I,$ what is the rate of appearance of $H I$ , if rate of disappearance of $H_{2}$ is $1 0^{- 6} m o l L^{- 1} s^{- 1}$ ?

$1 0^{- 6} m o l L^{- 1} s^{- 1}$

$2 \times 1 0^{- 6} m o l L^{- 1} s^{- 1}$

$0.5 \times 1 0^{- 6} m o l L^{- 1} s^{- 1}$

$1 0^{- 7} m o l L^{- 1} s^{- 1}$

$- \frac{d [ H _{2} ]}{d t} = \frac{1}{2} \frac{d [ H I ]}{d t}$
$- \frac{d [ H I ]}{d t} = 2 \times 1 0^{- 6} m o l L^{- 1} s^{- 1}$

Q. In the reaction, H2​+I2​→2HI, what is the rate of appearance of HI, if rate of disappearance of H2​ is 10−6molL−1s−1?

10−6molL−1s−1

2×10−6molL−1s−1

0.5×10−6molL−1s−1

10−7molL−1s−1