Propane gas (C3H8) burns in oxygen to form carbon dioxide and water vapor according to the equation shown below. According to Gay-Lussac's law of combining volumes, one volume of propane will combine with ______ volume(s) of oxygen to produce a total of ______ volumes of products.C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)Multiple choice question.five; threefive; sevenone; sevenone; two
Question
Propane gas (C3H8) burns in oxygen to form carbon dioxide and water vapor according to the equation shown below. According to Gay-Lussac's law of combining volumes, one volume of propane will combine with ______ volume(s) of oxygen to produce a total of ______ volumes of products.C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)Multiple choice question.five; threefive; sevenone; sevenone; two
Solution
The correct answer is "five; seven". According to the balanced chemical equation, one volume of propane (C3H8) will combine with five volumes of oxygen (O2) to produce a total of seven volumes of products (3 volumes of CO2 and 4 volumes of H2O). This is in accordance with Gay-Lussac's law of combining volumes, which states that the ratio of the volumes of gases involved in a chemical reaction is directly proportional to the ratio of stoichiometric coefficients in the balanced chemical equation (assuming all gases are at the same temperature and pressure).
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