
KIMIA PTN 3
Authored by mitra bintaro
Chemistry
2nd Grade
Used 11+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Logam nikel (Mr = 59) bereaksi dengan gas karbon monoksida (Mr = 28) pada suhu 130 oC menurut reaksi berikut.
Ni(s) + 4CO(g) → Ni(CO)4(g)
Jika 252 g gas CO direaksikan dengan 118 g logam Ni, massa gas tetrakarbonilnikel (Mr = 171) yang dihasilkan adalah ....
430 g
427 g
342 g
280 g
171 g
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cis-platin (Mr = 300), senyawa antikanker, disintesis dengan mereaksikan 1,7 g amonia (Mr = 17) dengan 8,3 g K2PtCl4 (Mr = 415) menurut reaksi berikut.
K2PtCl4(s) + 2NH3(g) → Pt(NH3)2Cl2(s) + 2KCl(s)
Jika reaksi berlangsung sempurna, massa pereaksi yang tersisa adalah ....
0,51 g
1,02 g
2,04 g
4,08 g
8,16 g
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Gas disilana (Mr = 62) bereaksi dengan gas O2 (Mr = 32) pada suhu tertentu menurut reaksi berikut.
2Si2H6(g) + 7O2(g) → 4SiO2(s) + 6H2O(l)
Massa SiO2 (Mr =60) yang dihasilkan dari reaksi antara 46,5 g Si2H6 dan 128 g O2 adalah .....
8,6 g
32 g
60 g
62 g
90 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Krom (III) oksida (Mr = 152) dapat direduksi menjadi logam krom (Ar = 52) menurut reaksi berikut.
Cr2O3(s) + 3CO(g) → 2Cr(s) + 3CO2(g)
Jika persen hasil reaksi di atas adalah 75%, massa logam krom yang diperoleh dari reaksi antara 15,2 g Cr2O3 dan 5,6 g gas CO (Mr = 28) adalah .....
5,187 gr
6,0 gr
4,5 gr
4,187 gr
5,7 gr
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 31,8 gram Na2CO3 direaksikan dengan XSO4 berlebih menurut persamaan reaksi berikut.
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)
60
40
100
45
50
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam 15,9 gram senyawa tembaga (I)sulfide (Ar: Cu = 63,5 dan S= 32) terdapat Cu sebanyak ….
63,5 gr
45,5 gr
50 gr
68 gr
15 gr
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bila diukur pada 27 ºC, 1 atm, gas oksigen yang massanya 8 gram akan bervolume . . . . (R = 0,082 L atm K-1 mol-1, Ar O = 16)
22,4 L
16,5 L
15,2 L
15,6 L
6,15 L
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