SOAL KIMIA CHAPTER ENTHALPY

1. Energi kimia yang tersimpan dalam suatu zat disebut . . .

1. Reaktan
2. Produk
3. Enthalpy
4. Senyawa
5. Mol

2. Salah satu sifat reaksi exotermic adalah . . .

1. ∆H°>0
2. Reaktan< produk
3. Timbul gelembung
4. Melepas energi
5. Timbul ledakan
   
   

3. Salah satu sifat reaksi endotermic adalah . . .

1. Menyerap energi
2. Produk< reaktan
3. ∆H°< 0
4. Timbul gelembung
5. Timbul ledakan

4. CO(NH2)2+H2O, adalah contoh dari . . .

1. Reaksi exotermic
2. Reaksi endotermic
3. Reduksi
4. Oksidasi
5. Produk

5. Keadaan dimana kurva temperatur dan penambahan panas pada suatu bahan pada laju konstan adalah . . .

1. Kurva pemanasan
2. Kurva pendinginan
3. Kurva penawaran
4. Kurva permintaan
5. Kurva pelarutan

6. Perubahan wujud zat dari padat ke cair adalah . . .

1. Menguap
2. Mengembun
3. Mencair
4. Membeku
5. Menyublim

7. Perubahan wujud zat dari gas ke cair adalah . . .

1. Menguap
2. Mengembun
3. Mencair
4. Membeku
5. Menyublim

8. Perubahan wujud zat dari cair ke padat adalah . . .

1. Menguap
2. Mengembun
3. Mencair
4. Membeku
5. Menyublim

9. Perubahan wujud zat dari padat ke gas adalah . . .

1. Menguap
2. Mengembun
3. Mencair
4. Membeku
5. Menyublim

10. The standard enthalpy change is measured at . . .

1. 0,5 atmospheric pressure and 25°
2. 1 atmospheric pressure and 25°
3. 1 atmospheric pressure and 20°
4. 0,5 atmospheric pressure and 20°
5. 2 atmospheric pressure and 30°

11. The example of endothermic reaction, except . . .

1. Photosyntesis
2. Explotion of bomb
3. Recharging
4. Vaporation
5. N2S2O3+H2O

12. A reaction in wich the energy is absorbed from the surroundings is . . .

1. Endothermic reaction
2. Exothermic reaction
3. Reduction
4. Reactants
5. Product

13. Bond breaking . . . energy, ∆H° . . . 0

1. Needs, <
2. Needs, =
3. Needs, >
4. Releases, <
5. Releases, >

14. Bond formation . . . energy, ∆H° . . . 0

1. Needs, <
2. Needs, =
3. Needs, >
4. Releases, <
5. Releases, >

15. The enthalpy change that occurs at the sublimation temperature when a solid sublimes is called . . .

1. Enthalpy of melting
2. Enthalpy of freezing
3. Enthalpy of deposition
4. Enthalpy of evaporation
5. Enthalpy of sublimation

16. Which one of the following reactions is correctly associated with standard enthalpy of formation of gaseous carbon monoxide ?

1. CO2(g)+C(diamond)→2CO(g)
2. C(diamond)+1/2O2(g)→CO(g)
3. C(graphyt)+1/2O2(g)→CO(g)
4. C(g)+1/2O2(g)→CO(g)

17. Which one of the following reactions is correctly associated with standart enthalpy of atomization ?

1. CO2(g)→C(graphyt)+O2(g)
2. CO2(g)→C(diamond)+O2(g)
3. CO2(g)→C(g)+O2(g)
4. CO2(g)→C(g)+2O(g)

18. Which one of the following reactions is correctly associated with standart enthalpy of atomization ?

1. 2H2O(g)→2H2(g)+O2(g)
2. H2O(l)→H2(g)+1/2O2(g)
3. H2O(l)→2H(g)+O(g)
4. H2O(g)→2H(g)+O(g)

19. Which one of the following reactions is correctly associated with standart enthalpy of combustion of carbon ?

1. C(graphyte)+1/202(g)→CO(g)
2. C(graphyte)+02(g)→CO2(g)
3. C(g)+O2(g)→CO2(g)
4. C(g)+1/2O2(g)→CO(g)