Chemistry, 27.07.2019 01:30 carswellml
Consider the reaction 2al(oh)3(s)→al2o3(s)+3h2o(l) with enthalpy of reaction δhrxn∘=21.0kj/mol what is the enthalpy of formation of al2o3(s)?
Answers: 1
is coming out to be -399.5 kJ/mol.
![\Delta H^o_{rxn}=\sum [n\times \Delta H^o_f_{(product)}]-\sum [n\times \Delta H^o_f_{(reactant)}]](/tpl/images/0137/0370/72c39.png)
![\Delta H^o_{rxn}=[(1\times \Delta H^o_f_{(Al_2O_3(s))})+(3\times \Delta H^o_f_{(H_2O(l))})]-[(2\times \Delta H^o_f_{(Al(OH)_3(s))})]](/tpl/images/0137/0370/5f783.png)
![21.0=[(1\times \Delta H^o_f_{(Al_2O_3(s))})+(3\times (-285.8))]-[(1\times (-1277))]\\\\\Delta H^o_f_{(Al_2O_3(s))}=-399.5kJ/mol](/tpl/images/0137/0370/f9446.png)
Other questions on the subject: Chemistry
Chemistry, 22.06.2019 05:00, adrian128383
What forms when chemical reactions combine pollution with sunlight?
Answers: 1
Chemistry, 22.06.2019 23:00, liv467
Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?
Answers: 3
Chemistry, 22.06.2019 23:30, treylartigue
The appropriate concentration for an iodine sanitizer is
Answers: 1
You know the right answer?
Consider the reaction 2al(oh)3(s)→al2o3(s)+3h2o(l) with enthalpy of reaction δhrxn∘=21.0kj/mol what...
Questions in other subjects:
Health, 26.01.2021 21:50
Biology, 26.01.2021 21:50
Mathematics, 26.01.2021 21:50
Biology, 26.01.2021 21:50
Chemistry, 26.01.2021 21:50
