Given `NH_(3)(g)+3Cl_(2)(g)toNCl_(3)(g)+3HCl(g)+x_(1)` `N_(2)(g)+3H_(2)(g)to2NH_(3)(g)+x_(2)` `H_(2)(g)+Cl_(2)(g)to2HCl(g)-x_(3)` The heat of formatio
Given
`NH_(3)(g)+3Cl_(2)(g)toNCl_(3)(g)+3HCl(g)+x_(1)`
`N_(2)(g)+3H_(2)(g)to2NH_(3)(g)+x_(2)`
`H_(2)(g)+Cl_(2)(g)to2HCl(g)-x_(3)`
The heat of formation of `NCl_(3)(g)`
A. `-x_(1)-(x_(2))/(2)-(3x_(3))/(2)`
B. `x_(1)+(x_(2))/(2)-(3)/(2)x_(3)`
C. `x_(1)-(x_(2))/(2)-(3)/(2)x_(3)`
D. `x_(1)+x_(2)+(3x_(3))/(2)`
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Correct Answer - A
Carry out the following operation
`(1)/(2)[eqn.(ii)]+eqn. (i)-(3)/(2)[eqn.iii]`
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