Termokimia
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Standards-aligned
Jenny Rindarsih
Used 116+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Reaksi penyerapan kalor dari lingkungan ke sistem disebut ...
Reaksi eksoterm
Reaksi endoterm
Reaksi kimia
Reaksi pembakaran
Reaksi oksidasi
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Pada reaksi antara soda api dan HCl, jika kita pegang maka wadah reaksi akan terasa panas. Peristiwa tersebut termasuk contoh reaksi....
endoterm
eksoterm
isoterm
redoks
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
eksoterm, energi berpindah dari sistem ke lingkungan
eksoterm, energi berpindah dari lingkungan ke sistem
endoterm, energi berpindah dari lingkungan ke sistem
edoterm, energi berpindah dari sistem ke lingkungan
endoterm, energi tidak berubah
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika diketahui: N2(g) + 3 H2(g) → 2 NH3(g) ∆H = - 92 kJ maka perubahan entalpi untuk penguraian 1 mol gas NH3 menjadi unsur-unsurnya adalah....
-92 kJ/mol
-46 kJ/mol
+46 kJ/mol
+92 kJ/mol
+184 kJ/mol
5.
MULTIPLE CHOICE QUESTION
2 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
2 mins • 1 pt
Diketahui :
2NO(g) + O2(g) --> N2O4(g) ΔH = a kJ
NO(g) + O2(g) --> NO2(g) ΔH = b kJ
Besarnya ΔH untuk reaksi :
2NO2(g) --> N2O4(g) adalah …
(a + b) kJ
(a – 2b) kJ
(a + 2b) kJ
(2a + b) kJ
(-a + 2b) kJ
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bila diketahui energi ikatan rata-rata :
N-H = 391 kJ/mol,
H-H = 435 kJ/mol,
N≡N = 946 kJ/mol,
maka entalpi pembentukan gas NH3 menurut reaksi :
1/2 N2(g) + 3/2 H2(g) → NH3(g) adalah….
- 95 kJ/mol
- 47,5 kJ/mol
95 kJ/mol
47,5 kJ/mol
50 kJ/mol
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