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A mixture with a total mass of 3.12 g contains sucrose (C6H1206, 342.30 g mol-1) and ethyl alcohol (C2H60, 46.07 g mol-1). This mixture is reacted with an acidic aqueous solution of potassium dichromate (K2 Cr2 07). 3.04 L of CO2 (g) released from the reaction accumulates on the water at 35 °C and has a barometric pressure of 0.92 atm. If the vapor pressure of water at this temperature is 42.20 mmHg, what is the percentage by mass of C6H1206 in the mixture?

A mixture with a total mass of 3.12 g contains sucrose (C6H1206, 342.30 g mol-1) and ethyl alcohol (C2H60, 46.07 g mol-1). This mixture is reacted with an acidic aqueous solution of potassium dichromate (K2 Cr2 07). 3.04 L of CO2 (g) released from the reaction accumulates on the water at 35 °C and has a barometric pressure of 0.92 atm. If the vapor pressure of water at this temperature is 42.20 mmHg, what is the percentage by mass of C6H1206 in the mixture?

Organic Chemistry: A Guided Inquiry
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter4: Polar Bonds, Polar Reactions
Section: Chapter Questions
Problem 8CTQ
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A mixture with a total mass of 3.12 g contains sucrose (C6H1206, 342.30 g mol-1) and ethyl alcohol (C2H60, 46.07 g mol-1). This mixture is reacted with an acidic aqueous solution of potassium dichromate (K2 Cr2 07). 3.04 L of CO2 (g) released from the reaction accumulates on the water at 35 °C and has a barometric pressure of 0.92 atm. If the vapor pressure of water at this temperature is 42.20 mmHg, what is the percentage by mass of C6H1206 in the mixture?

C6H1206 (aq) + Cr207 2- (aq) + CO2 (g) + Cr3+ (aq) (not balanced) C2H60 (aq) + Cr207 2- (aq) + CO2(g) + Cr* (aq) (not balanced)

Toplam 3.12 g kütleye sahip bir karışım sukroz (CH12O6, 342.30 g mol-1) ile etil alkol (C2H,0, 46.07 g mol-") içermektedir. Bu karışım asidik sulu potasyum dikromat (K2Cr,0,) çözeltisi ile tepkimeye sokuluyor. Tepkimeden çıkan 3.04 L CO2(g) 35 °C'de su üzerinde toplanıyor ve 0.92 atm barometrik basınca sahip olduğu gözleniyor. Suyun bu sıcaklıktaki buhar basıncı 42.20 mmHg ise karışımdaki CH12O6 kütlece yüzdesi nedir? C6H12O6(suda) + Cr,0,²"(suda) → CO2(g) + Cr³*(suda) (denkleştirilmemiş) C2H,O(suda) + Cr,0;²-(suda) → CO2(g) + Cr³*(suda) (denkleştirilmemiş)
Transcribed Image Text:Toplam 3.12 g kütleye sahip bir karışım sukroz (CH12O6, 342.30 g mol-1) ile etil alkol (C2H,0, 46.07 g mol-") içermektedir. Bu karışım asidik sulu potasyum dikromat (K2Cr,0,) çözeltisi ile tepkimeye sokuluyor. Tepkimeden çıkan 3.04 L CO2(g) 35 °C'de su üzerinde toplanıyor ve 0.92 atm barometrik basınca sahip olduğu gözleniyor. Suyun bu sıcaklıktaki buhar basıncı 42.20 mmHg ise karışımdaki CH12O6 kütlece yüzdesi nedir? C6H12O6(suda) + Cr,0,²"(suda) → CO2(g) + Cr³*(suda) (denkleştirilmemiş) C2H,O(suda) + Cr,0;²-(suda) → CO2(g) + Cr³*(suda) (denkleştirilmemiş)
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