Perubahan entalpi standar & Cara menentukan ΔH

Quiz
•
Chemistry
•
11th Grade
•
Medium
Febiyuniesa N.A
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui :
H2(g) + 1/2O2(g) → H2O(g) ΔH = -241,8 kJ
H2O(l) → H2O(s) ΔH = -6,01 kJ
H2(g) + 1/2O2(g) → H2O(l) ΔH = -285,8 kJ
Tentukan perubahan entalpi penguapan air dari wujud padat jika diketahui reaksi-reaksi berikut:
ΔH = -50,01 kJ
ΔH = 60,01 kJ
ΔH = 50,01 kJ
ΔH = -74,05 kJ
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diberikan beberapa data nilai perubahan entalpi pembentukan standar sebagai berikut.
ΔHf° CO2(g) = –394 kJ/mol
ΔHf° H2O(g) = –286 kJ/mol
ΔHf° C3H8(g) = –104 kJ/mol
Nilai perubahan entalpi pada pembakaran 1 gram propana (C3H8) (Mr = 44 g/mol) berdasarkan data nilai perubahan entalpi pembentukan standar di atas adalah….
A. + 44,54 kJ
B. + 44,44 kJ
C. – 44,44 kJ
D. – 2222 kJ
E. – 2227 kJ
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Siapakah Ilmuan yang melakukan manipulasi pada persamaan termokimia untuk menghitung perubahan entalpi (ΔH) ?
A. Germain Henri Hess
B. John Dalton
C. Marie Curie
D. Antonie Lavoasier
E. Abu Bakar As-Siddik
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Ciri utama dari reaksi pembakaran adalah:
1) Merupakan reaksi eksoterm.
2) Melibatkan oksigen (O2) dalam reaksinya.
Berdasarkan ciri - ciri tersebut termasuk kedalam perubahan entalpi jenis reaksi apa ?
A. Perubahan Entalpi Pembentukan standar
B. Perubahan Entalpi Pembakaran standar
C. Perubahan Entalpi Penguraian standar
D. Perubahan Entalpi Pelarutan standar
E. Perubahan Entalpi Penguapan standar
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Berdasarkan data tabel tersebut digunakan dalam menghitung perubahan entalpi ?
A. Hukum Hess
B. Energi ikatan
C. Perubahan entalpi pembentukan standar
D. Kalorimeter
E. Kalorimetri
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