
Organinės chemijos uždaviniai
Quiz
•
Chemistry
•
11th Grade
•
Hard
Austė Lacytė
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10 questions
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1.
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5 mins • 3 pts
6 gramai kalio reaguoja su propanoliu (C3H7OH), kurio yra 15 gramų. Rasti, kiek gramų C3H7OK išsiskyrė reakcijos metu.
K + C3H7OH -> C3H7OK + H2
2.
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5 mins • 3 pts
112 l eteno (C2H4) reaguoja ir susidaro etanolis. Duotas 95% etanolio (C2H5OH) tirpalas (ρ=0,8 g/ml). Rasti etanolio tirpalo tūrį litrais.
C2H4 + H2O -> C2H5OH
3.
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5 mins • 2 pts
Apskaičiuoti susidariusio anglies (IV) oksido tūrį, gautą sudeginus 3 l metano ir 1 l butano mišinio.
CH4 + 2 O2 -> CO2 + 2 H2O
C4H10 + 6,5 O2 -> 4 CO2 + 5 H2O
4.
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5 mins • 3 pts
Sudeginus etaną susidarė 5,6 l anglies dioksido. Dujos praleistos pro 200 g 5% natrio šarmo tirpalą. Kiek gramų gautos druskos susidarė?
2 C2H6 + 7 O2 -> 4 CO2 + 6 H2O
2 NaOH + CO2 -> Na2CO3 + H2O
5.
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5 mins • 1 pt
Apskaičiuoti etano santykinį tankį oro atžvilgiu.
6.
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5 mins • 1 pt
Rasti tūrį dujų (n.s.), gautų deginant 112 m3 etano (n.s.).
7.
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5 mins • 1 pt
Kokį tūrį litrais užims 112 g metano?
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