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Chemistry
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11th Grade
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Yenny Dwi
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi larutan elektrolit di bawah ini yang menghasilkan endapan adalah ….
HCl(aq) + NaOH(aq)
KNO3(aq) + NaBr(aq)
Ca(OH)2(aq) + HCl(aq)
AgNO3(aq) + NaCl(aq)
NaNO3(aq) + KCl(aq)
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Larutan natrium karbonat direaksikan dengan larutan asam klorida menghasilkan gas karbondioksida dan air. Persamaan reaksi ion bersihnya adalah ….
Na2CO3(aq) + 2 HCl(aq) → 2 NaCl(aq) + CO2(aq) + H2O(l)
2 Na+(aq) + CO32- + 2 H+(aq) +2 Cl–(aq) → 2 Na+(aq) + 2 Cl–(aq) + CO2(g) + H2O(l)
Na2CO3(aq) + 2 HCl(aq) → 2 Na+(aq) + Cl2(aq) + CO2(aq)+ H2O(g)
CO32-(aq) + 2 H+(aq) → CO2(g)+ H2O(l)
CO3-(aq) + H+(aq) → CO2(g) + H2O(l)
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksiberikut: NH4+(aq) + H2O(aq) ⇆ H3O+(aq) + NH3(aq)
Spesi-spesi yang merupakan pasangan asam basa konjugasi adalah ….
H3O+ dan NH4+
H3O+ dan H2O
NH4+dan H2O
NH3 dan H3O+
H2O dan NH3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
0,58 gram Mg(OH)2 yang terlarutdalam 2 Liter larutan (Mr Mg(OH)2 = 58) mempunyai pH sebesar ….
2
3 – log 5
11 - log 5
11 + log 5
12
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika suatu larutan ditetesi MR berwarna kuning, dengan PP tidak berwarna dan dengan BTB berwarna biru, maka harga pH larutan tersebut adalah ….
kurang dari 6
antara 7,6 sampai 8,3
antara 6,0 sampai 6,3
antara 4,2 sampai 7,6
antara 6,3 sampai 7,6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu indikator memberikan warna merah jika diteteskan pada larutan NaOH. Larutan di bawah ini akan menghasilkan warna yang sama jika diteteskan indikator yang sejenis, kecuali ….
Larutan sabun
Larutan soda kue
Larutan amoniak
Larutan cuka
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan data Ka beberapa asam di atas. Berdasarkan data tersebut, dapat ditarik kesimpulan bahwa kekuatan asamnya adalah….
HF > HNO2 > CH3COOH
HF > CH3COOH > HNO2
HNO2 > HF > CH3COOH
HNO2 > CH3COOH > HF
CH3COOH > HNO2 > HF
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