KD 3.5 ENTALPI DAN PERUBAHAN ENTALPI
Quiz
•
Chemistry
•
11th Grade
•
Hard
Amelia Dwi Sundari
Used 5+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Entalpi pembentukan standar NH4Br adalah ΔH dari reaksi….
NH3(g) + HBr(g) → NH4Br(s)
½ N2(g) + 2H2(g) + ½ Br2(g)→ NH4Br(s)
N(g) + 4H(g) + Br(g)→ NH4Br(s)
N2(g) + 4H2(g) + Br2(g) → 2NH4Br(s)
½ N2(g) + 2H2(g) + ½ Br2(l) → NH4Br(s)
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan reaksi reaksi beriut!
CS3 + 3O2 → CO2 + 2SO2 ΔH= -577 kj
S + O2 → SO2 ΔH= -300 kj
2S + Cl2→ S2Cl2 ΔH= -60 kj
C + O2 → CCl4 ΔH= -135 kj
Harga ΔH untuk reaksi : CS2 + 3Cl2 → CCl4 + S2Cl2 adalah….
-566 kJ
-408 kJ
-78 kJ
222 kJ
288 kJ
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kalor yang di hasilkan dari pelarutan CaCl2 (Mr= 111) di dalam air di gunakan pada kantong penghangat P3K reaksi pelarutnya adalah sebagai berikut :
CaCl2(s) → Ca2+(aq) + 2Cl-(aq) ΔH= -83,6kJ
Sebuah kantong penghangat di rancang agar suhunya naik dari 25oC menjadi 35oC ketika di gunakan. Jika kapasitas kalor kantong penghangat beserta isinya adalah 418 J/oC maka massa CaCl2 yang harus di tambahkan ke dalam kantong tersebut adalah....
1,11 gram
5,55 gram
11,1 gram
55,5 gram
222 gram
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dik reaksi :
4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) ΔH= - 900kJ
Entalpi pembentuk amoniak = - 45 kJ
Entalpi pembentukan uap air = - 240 kJ
Entalpi pembentuk NO adalah....
+180 kJ
-180 kJ
+90 kJ
-90 kJ
+120 kJ
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dik energi ikatan rata rata sebagai berikut
C - H = 414 kJ/mol
Cl - Cl = 244 kJ/mol
H - Cl = 432 kJ/mol
C - Cl = 326 kJ/mol
Perubahan entalpi untuk reaksi berikut :
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g) adalah....
-100 kJ/mol
+100 kJ/mol
+728 kJ/mol
-1342 kJ/mol
+1342 kJ/mol
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