Kuis Termokimia XI-3
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Medium
CAHYA AULIA
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika satu sendok serbuk seng dimasukkan ke dalam gelas kimia yang berisi larutan HCl, ternyata terbentuk gelembung gas dan dasar tabung terasa panas. Reaksi ini dapat digolongkan :
Eksoterm, energi berpindah dari sistem ke lingkungan
Eksoterm, energi berpindah dari lingkungan ke sistem
Endoterm, energi berpindah dari sistem ke lingkungan
Endoterm, energi berpindah dari lingkungan ke sistem
Endoterm, energi tidak berpindah
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan gambar berikut ini !
Reaksi tersebut termasuk ke dalam reaksi ....
eksoterm, karena H pereaksi < H hasil reaksi, ΔH = -
endoterm, karena H pereaksi < H hasil reaksi, ΔH = +
eksoterm, karena H pereaksi > H hasil reaksi, ΔH = +
endoterm, karena H pereaksi > H hasil reaksi, ΔH = -
endoterm, karena H pereaksi = H hasil reaksi, ΔH = +
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diagram tahap reaksi pembentukan gas SO3 adalah sebagai berikut !
Berdasarkan diagram tersebut, ΔH1 adalah … kJ
790,4
593,8
196,6
– 593,8
– 196,6
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ke dalam tabung reaksi yang berisi air dilarutkan urea padat. Ternyata jika dipegang pada tabung reaksi terasa dingin. Yang dimaksud dengan sistem pada peristiwa ini adalah .....
Urea
Air
Urea dan Air
Urea, air dan tabung reaksi
Tangan dan tabung reaksi
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Siklus suatu reaksi ditunjukkan dengan diagram di atas ....
Dari siklus di atas harga ∆H1 adalah . . .
-225 kJ
+105 kJ
-135 kJ
+225 kJ
-105 kJ
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
(a + b) kJ
(a – 2b) kJ
(a + 2b) kJ
(2a + b) kJ
(-a + 2b) kJ
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan reaksi termokimia di bawah ini:
1. ½ N2 (g) + ½ O2 (g) → NO (g) ΔH = +kJ/mol
2. NO2 (g) → ½ N2 (g) + O2 (g) ΔH = −kJ/mol
3. CO2 (g) → C (s) + O2 (g) ΔH = +kJ/mol
4. C2H5OH + 3O2 → 2CO2 + 3H2O ΔH = −kJ/mol
5. Na (s) + ½ Cl2 (g) → NaCl ΔH = −kJ/mol
Pasangan persamaan reaksi yang merupakan ΔHfo, ΔHdo, dan ΔHco adalah ….
(3), (4), dan (5)
(2), (4), dan (5)
(1), (3), dan (5)
(1), (2), dan (4)
(1), (2), dan (3)
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