
PH laju reaksi
Authored by Susi Hendriani
Chemistry
11th Grade
Used 2+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 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
2.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Jika reaksi antara logam Magnesium dengan Asam Klorida encer di campurkan kedalam tabung reaksi yang tersumbat dengan rapat, gas Hidrogen yang dihasilkan di dalam sistem tidak dapat meninggalkan sistem. Akan tetapi perambatan kalor meninggalkan sistem tetap terjadi melalui dinding pada tabung reaksi. Pada percobaan ini termasuk ke dalam…
Sistem terbuka
Sistem tertutup
perubahan entalpi
energy dalam
Sistem terisolasi
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Yang dimaksud dengan entalpi adalah...
Jumlah energi yang diterima suatu zat
Reaksi yang membebaskan kalor
Reaksi yang membutuhkan kalor
Jumlah energi yang dimiliki suatu zat
Jumlah energi yang dilepaskan suatu zat
4.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Jika satu sendok NaOH padat dimasukkan ke dalam gelas kimia yang berisi larutan HCl, ternyata 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 bertambah
5.
MULTIPLE CHOICE QUESTION
10 mins • 4 pts
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
10 mins • 5 pts
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
10 mins • 5 pts
Bila data entalpi pembentukan standar:
C3H8 (g) = – 104 kJ mol–1
CO2 (g) = – 394 kJ mol–1
H2O (g) = – 286 kJ mol–1
maka harga ΔH reaksi :
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l) adalah …
–1.024 kJ
–1.121 kJ
–1.134 kJ
–2.222 kJ
–2.232 kJ
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