
Ammonium Hidroksida
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Chemistry
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University
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6 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Aku adalah kation golongan IIA, aku berupa endapan kuning jika aku ditambahkan dengan air cuka dan K2CrO4. Kation jenis apakah aku?
Hg2+
Cu2+
Cd2+
Pb2+
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Dalam suasana asam, besi (II) dititrasi dengan larutan kalium permanganat 0,0576 M, larutan KMnO4 yang diperlukan 20,98 mL. Hitunglah mg besi dalam larutan tersebut?
338,24 mg
33,824 mg
383,24 mg
32,843 mg
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Asidimetri dan alkalimetri termasuk jenis titrasi apa ?
Titrasi tidak langsung
Titrasi redoks
Titrasi asam-basa
Titrasi balik
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Apa fungsi Asam Sulfat pada percobaan identifikasi anion dalam sampel padat ?
Sebagai pengasam
Sebagai reagen
Sebagai pencuci endapan
Sebagai sampel
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Suatu sampel jika diasamkan dengan HCl dan diberi NH4OH sampai alkalis dan dipanaskan akan terdapat endapan putih gelatin, pengamatan tersebut dapat disimpulkan bahwa sampel mengandung kation?
Mn(+)
Co(+)
Al(+)
Sn(+)
6.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Manakah reaksi yang benar pada penentuan kadar Ca2+ dalam CaCl2 dengan analisis gravimetri menggunakan reagen (NH4)2C2O4?
CaCl2(aq) + (NH4)2C2O4(aq) → Ca(s)↓+ C2O4(aq)+ 2NH4Cl(aq)
CaCl2(s) + (NH4)2C2O4(aq) → Ca(s)↓+ C2O4(aq)+ 2NH4Cl(aq)
CaCl2(aq) + (NH4)2C2O4(aq) → CaC2O4(s)↓+ NH4Cl(g)↑
CaCl2(aq) + (NH4)2C2O4(aq) → CaC2O4(s)↓+ 2NH4Cl(g)↑
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