
Pretest Kimia Sesi 6 (Wido Studianah, S.Pd.)

Quiz
•
Chemistry
•
12th Grade
•
Hard
SMAN 11Bandung suksessebelas
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika 2,7 gram aluminium (Ar Al =27) dilarutkan dalam 500 ml larutan H2SO4 menghaslikan aluminium sulfat dan gas hidrogen. Maka molaritas H2SO4 ….
0,3M
0,6M
0,03M
0,06M
0,9 M
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 1,4 gram gas A2 memiliki volume 0,8 liter diukur pada keadaan yang sama dimana 3,2 Gram gas oksigen memiliki volume 1,6 liter. Jika jumlah neuton satu atom A adalah 7, maka unsur segolongan dengan unsur yang memiliki nomor atom…. (Ar O = 16)
11
14
20
28
33
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Untuk membuat 4 gram besi (II)sulfat (Mr 400)dari besi(III) oksida diperlukan larutan 0,1M, berapa ml volume larutan larutan asam sulfat
10 ml
30 ml
100ml
300 ml
600 ml
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Gas hidrogen dapat dihasilkan melalui reaksi antara logam besi dan uap air menurut reaksi berikut.
3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)
Jika 168 kg Fe (Ar = 56) direaksikan dengan 36 kg uap air (Mr = 18), massa gas H2 (Mr = 2) yang dihasilkan adalah ....
4 kg
6 kg
8 kg
10 kg
16 kg
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 31,8 gram Na2CO3 direaksikan dengan XSO4berlebih menurut persamaan reaksi berikut.
XSO4 (aq) + Na2CO3 (aq) → XCO3 (s) + Na2SO4 (aq)
Jika dari reaksi tersebut dihasilkan 30 gram XCO3, massa atom relatif dari unsur X adalah ….
(Ar Na = 23; C = 12; S = 32; dan O = 16)
40 g/mol
39 g/mol
64 g/mol
100 g/mol
24 g/mol
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 12 gram logam Magnesium (Ar Mg = 24) direaksikan dengan 50 mL larutan HCl 2 M (massa jenis = 1,2 g/mL). Larutan hasil reaksi mengalami kenaikan suhu sebesar 50C. Jika kalor jenis larutan adalah 4,2 J.g/ 0C, perubahan entalpi reaksi tersebut adalah ….
+15,12 kJ/mol
-7,56 kJ/mol
+7,56 kJ/mol
+151,2 kJ/mol
-15,12 kJ/mol
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada percobaan reaksi A + B → 2C, diperoleh data pada tabel sebagai berikut.
Harga tetapan laju untuk reaksi tersebut adalah…
320 M/s
32 M/s
160 M/s
64 M/s
640 M/s
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