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For the reaction N{2}(g) + 3H{2}(g)rarr2...

For the reaction `N_{2}(g) + 3H_{2}(g)rarr2NH_{3}(g)` , how are the rate of reaction expressions `-d[H_{2}]/dt` and `d[NH_{3}]/dt` interrelated?

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`rate =(-(d)[(N)_(2))(dt)=(-1)(3) (d)[(H)_(2)(dt) =(1)(2) ((d)l(NH)_(3)(dt)` `(-1)(3) ((d)[(H)_(2)((dt))=(1)(2) ((d)left[(NH)_(3)((dt))`
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