The first law of thermodynamics states that_energy is transferred from the surro

Question

The first law of thermodynamics states that_energy is transferred from the surrondings to the system during a combustion reaction. if a system loses energy to the surrondings, then the surroundings must do an equal amount of work on the system. if is surroundings gain energy from the system. then the system must lose an equal amount of energy. energy is transferred from the system to the surroundings during a combustion reaction. it a system does work on the surroundings, then the surroundings must transfer an equal amount of energy to the system Determine the standard enthalpy of formation for NO given the following information about the formation of NO_2 under standard conditions, and deltaH^+_t(NO_2) = + 33.2 kJ/mol. 2 NO(g) + O_2(g) rightarrow 2 NO_2(g) deltaH_min = -114.2kj 90.3 kJ/mol -90.3 kJ/mol -147.4 kJ/mol -180.6 kJ/mol -73.7 kJ/tnol In which compound does chlorine have an oxidation number of +7? HCIO_4 HCIO_3 HCIO_2 HClO Hcl Which of the follow ing compounds is most soluble in water PbCl_2 CaCO_2 Al(OH)_3 Na_2So_4 MgS

Explanation / Answer

18) First law of thermodynamics states that,

e. If a system does work on the surrounding, than the surrounding must transfer an equal amount of energy to the system.

19) dHrxn = dHproducts - dHreactants

-114.2 = (2 x 33.2) - (2 x dHf(NO))

dHf(NO) = +90.3 kJ/mol

a. 90.3 kJ/mol

20) Chlorine has an oxidation state of 7 in,

a. HClO4

+1 + x - 8 = 0

x = +7

21) Most soluble compound in water would be,

d. Na2SO4

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.