Which one of the following equations is correct for the reaction
`N_(2)(g) + 3H_(2)(g) to 2NH_(3)(g)`?

Options

A. `3(d[NH_(3)])/(dt)=2(d[H_(2)])/(dt)`
B. `2(d[NH_(3)])/(dt)=3(d[H_(2)])/(dt)`
C. `3(d[NH_(3)])/(dt)=-2(d[H_(2)])/(dt)`
D. `3(d[NH_(3)])/(dt)=-2(d[H_(2)])/(dt)`

Answer

D

Explanation

`N_(2)(g) + 3H_(2)(g) to 2NH_(3)(g)`
Rate of reaction `= - (-d[N_(2)])/(dt) =(-d[N_(2)])/(dt)= (-d[H_(2)])/(3dt)= (d[NH_(3)])/(2dt)`
` therefore (d[NH_(3)])/(dt)= -2/3 (d[H_(2)])/(dt)`
`implies 3 (d[NH_(2)])/(dt)= -2(d[H_(2)])/(dt)`