Answer to Question #350568 in General Chemistry for Dknielle

Question

Decomposition of mercuric oxide HgO to mercury Hg and Oxygen O2 gas, requires 87.1 Kj of heat

Answer 1

The thermochemical equation is given below:

HgO(s)+87.1KJ=>Hg(s)+1.5O₂(g)

or,

HgO(s)=>Hg(s)+1.5O₂(g); ∆H = +87.1KJ

or,

2HgO(s) + 174.2KJ => 2Hg(s)+O₂(g)

or,

2HgO(s) => 2Hg(s)+O₂(g); ∆H=+174.2KJ