
Quiz Kimia
Authored by Devy Maulidya
Chemistry
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Berapakah suhu akhir 45 mL air pada suhu 15,4 °C yang menyerap panas sebesar 900 J jika diketahui kalor spesifik air 4,184 J/g°C)
14,1 °C
12,9 °C
20,18 °C
30,8 °C
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Jika diketahui reaksi seperti berikut:
Perubahan entalpi pada penguraian 1 mol gas NH3 menjadi unsur-unsurnya adalah
- 92 kJ
- 46 kJ
+ 46 kJ
+92 kJ
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Sebanyak 120 gram NaCl (Mr = 58.5gr/mol) dilarutkan dengan aquadest hingga volume 400
ml. Berapa molaritas larutan NaCl?
0,152 M
0.005 M
5,52 M
5,128 M
4.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Massa NaOH (Ar Na = 23, O = 16, dan H = 1) yang harus dilarutkan untuk membuat 100 mL
larutan NaOH 0,1 M adalah
0,04 gram
0,40 gram
4,00 gram
4,40 gram
5.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Tentukan nilai konstanta ionisasi basa (Kb) untuk basa lemah jika larutan basa lemah 0,35 M mempunyai pH 11,84 pada suhu 25 °C!
1.4 x 10-4
5.4 x 10-4
10.4 x 10-4
20.4 x 10-4
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Tentukan perubahan entalpi dari reaksi: 2Al(s) + 3 Cl2(g) → 2AlCl3(s)
Jika diketahui data sebagai berikut:
-6386,8 kJ
-2346,8 kJ
+6386,8 kJ
+2346,8 kJ
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Dalam studi reaksi piridina (C₅H₅N) dengan metil iodida (CH₃I) dalam larutan benzena, data laju awal reaksi berikut diukur pada suhu 25°C untuk berbagai konsentrasi awal kedua reaktan
Tentukan hukum laju reaksi untuk reaksi tersebut
V = k [C5H5N] [CH3I]
V = k [C5H5N]2 [CH3I]
V = k [C5H5N]2 [CH3I]2
V = k [C5H5N] [CH3I]2
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