Question

An unknown gaseous hydrocarbon with the volume of 10 ml was mixed with 70 ml of oxygen and the mixture was burned. At the end of the reaction after condensation of water vapor, the volume of the gas mixture was 65 ml. When the gas was passed through the potassium hydroxide solution, its volume decreased to 45 ml. Calculate the molecular formula of the unknown hydrocarbon, assuming that the gas volumes are measured at STP.
An unknown gaseous hydrocarbon with the volume of 10 ml was mixed with 70 ml of oxygen and the mixture was burned. At the end of the reaction after condensation of water vapor, the volume of the gas mixture was 65 ml. When the gas was passed through the potassium hydroxide solution, its volume decreased to 45 ml. Calculate the molecular formula of the unknown hydrocarbon, assuming that the gas volumes are measured at STP.​

Answer 1

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