
Oldhatóság
Authored by Erzsébet Dóka
Chemistry
12th Grade
Used 1+ times

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7 questions
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1.
OPEN ENDED QUESTION
1 min • 1 pt
Hány g 20°C-on telített konyhasóoldatban van 36g nátrium-klorid, ha a só oldhatósága ezen a hőmérsékleten 36g NaCl/100 g víz?
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2.
OPEN ENDED QUESTION
1 min • 1 pt
Hány tömeg%-os a 20°C-on telített kálium-nitrát-oldat? 20°C-on 100g víz 31,6g kálium-nitrátot old.
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3.
OPEN ENDED QUESTION
2 mins • 1 pt
Telített-e 40°C-on a 25 tömeg%-os kálium-klorid-oldat? 40°C-on 100 g víz 42,6 g kálium-kloridot old.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Telített-e 20°C-on az 5,875 mol/dm3-es, 1,175g/cm3 sűrűségű ammónium-nitrát-oldat, ha 20°C-on 100 g víz 192g ammónium-nitrátot old?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
50 cm3 desztillált vízbe kálium-bikromátot szórunk. 50°C-on megvárjuk az oldódási egyensúly beálltát, majd leszűrjük az oldatot. Ezután az oldatot 0°C-ra hűtjük. Hány g kálium-bikromát kristályosodik ki? 100g víz 0°C-on 5g, 50°C-on 34g K2Cr2O7-ot old.
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6.
OPEN ENDED QUESTION
10 mins • 5 pts
Hány g kálium-nitrát oldható fel 80°C-on 120 cm3 vízben? Hány %-át kapjuk vissza a feloldott sónak, ha a 80°C-on telített oldatot 20°C-ra hűtjük? 100g víz 20°C-on 31,6g, 80°C-on 169g KNO3-ot old.
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Answer explanation
7.
OPEN ENDED QUESTION
10 mins • 5 pts
A telített ammónium-nitrát-oldat 20°C-on 65,75 tömeg%-os, 80°C-on 85,29 tömeg%-os. Legalább hány g ammónium-nitrátból kell kiindulni, ha azt akarjuk, hogy 80°C-ról 20°C-ra hűtve az oldatot 50g átkristályosított sót kapjunk?
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