Saved Bookmarks
| 1. |
At 500 K, the equilibrium costant for the reaction `H_(2(g))+I_(2(g))hArr2HI_((g))" is "24.8" If "(1)/(2)mol//L` of HI is present at equilibrium, what are the concentrations of `H_(2)andI_(2)`, assuming that we started by taking HI and reached the equilibrium at 500 K ?A. `0.068"mol L"^(-1)`B. `1.020"mol L"^(-1)`C. `0.10"mol L"^(-1)`D. `1.20"mol L"^(-1)` |
|
Answer» Correct Answer - C `{:(,2HI_((g)),hArr,H_(2(g)),+,I_(2(g)),,K_(c)=24.8),("Intial conc.",1,,0,,0,),("At equilibrium",0.5,,x,,x,):}` `K_(c)=([H_(2)][I_(2)])/([HI]^(2))or(1)/(24.8)=(x.x)/(0.5xx0.5)orx^(2)=(0.25)/(24.8)=0.010` `x=0.10"mol L"^(-1)` |
|