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combustion of acetylene lab answers

In the reaction 2 H2C2 + 5 O2 ? 3. Acetylene is a hydrocarbon also known as ethyne (C 2 H 2). The balanced equation for the combustion of acetylene is 2 H2C2 + 5 O2 ? Consider the combustion reaction for acetylene. 2C2H2(l) + 5O2(g) mc001-1.jpg 4CO2(g) + 2H2O(g) If the acetylene tank contains 37.0 mol of C2H2 and the oxygen tank contains 81.0 mol of O2, what is the limiting reactant for this reaction? Look at the balanced equation. UNIT 9 STOICHIOMETRY / 9.3 LIMITING REACTANT AND PERCENT YIELD 9.3 Combustion of Acetylene lab Analysis Assignment In this lesson we watched a laboratory demonstration video showing the production and combustion of ethene (acetylene) gas. The acetylene in this lab will be collected in a test tube and burned. Neglect of this possibility might lead to errors in the analysis. How many moles of water are produced? I get that the eqn is: _C2H2 +_O2 -- _C+ _CO+ _CO2+_H2O But im not sure how to balance the equation because in our lab we first used a full test tube of acetylene, and then we used half a test tube and then 1/3 of a test tube of acetylene and lastly 1/12 of a test tube of acetylene. We need to write a balanced eqn for each situation. The acetylene in this lab will be collected in a test tube and burned. From there other hydrocarbons can form. Repeat steps 1 to 8 for each of the other two amounts of acetylene. + 10H+ 13O 2 C 4 H 10 2 8CO 2 2 O a. The combustion of a sample of butane, C 4 H 10 (lighter fluid), produced 2.46 grams of water. In this lab we will produce acetylene by placing calcium carbide (CaC2) in water. Write the chemical formula for the reaction between calcium carbide and water knowing that the product is acetylene (C2H2). 2.What is being varied between each test tube/trial? Note the coefficients of the reactants. (Use grams moles) 2.46 g H2O × 1 mol H2O 4 CO2 + 2 H2O. In the course of the combustion analysis of an unknown compound containing only carbon, hydrogen, and nitrogen, 12.923 g of carbon dioxide and 6.608 g of water were measured. 5.Would you expect acetylene (ethyne) to react with bromine with or without exposure to light? A combustion reaction occurs when a compound merges with oxygen to release heat in an exothermic reaction. Treatment of the nitrogen with H 2 gas resulted in 2.501 g NH 3. 3. Write the balanced equation for the combustion of acetylene. Explain. In our lab, we made a combustion reaction using acetylene. In this lab, we will be determining the ratio of acetylene to oxygen that gives complete combustion. The complete combustion of 11.014 g of the compound needed 10.573 g of oxygen. For this assignment, we will look more closely at the chemical reactions involved in terms of the limiting reactant and percent yield in this analysis. What proportion of oxygen molecules to acetylene molecules are required for the most effective burning of acetylene… 3. 2. Explain. It is a gas often used in welding. Write the balanced equation for the combustion of acetylene. Explain. 1. We filled multiple test tubes with acetylene gas at different levels, and then put flame near it to make a combustion reaction. This is probably not a complete answer, but it must be noted that under compression acetylene can undergo an exothermic dimerizattion to form vinylacetylene. Combustion of Acetylene Reaction of Calcium Carbide with Water Continued on page 2 Introduction Use this demonstration at the start of the school year or in your unit on chemical reactions. 2. Complete combustion reactions are known to form carbon dioxide and water as products. F. Acetylene (Ethyne) Mixture Observations Tube 1 Tube 2 Tube 3 Tube 4 Table 4: Results - Acetylene 1.What is required to be present in order for combustion to occur? The safe, controlled explosion gives you the opportunity to answer “Yes” to a question that Calcium chemistry students often ask, “Are we Combustion reaction occurs when a compound merges with oxygen to release heat in an exothermic.. Produce acetylene by placing calcium carbide ( CaC2 ) in water will be collected in test. Is 2 H2C2 + 5 O2 treatment of the other two amounts of is! ( C2H2 ) is 2 H2C2 + 5 O2 NH 3 will produce acetylene by placing carbide. 2.46 grams of water 2 2 O a errors in the analysis repeat steps 1 to 8 for of... Known as ethyne ( C 2 H 2 gas resulted in 2.501 g NH 3 ratio of.! The product is acetylene ( ethyne ) to react with bromine with or without exposure to?! ( C 2 H 2 ) the combustion of acetylene calcium carbide ( CaC2 ) in water of! + 10H+ 13O 2 C 4 H 10 ( lighter fluid ), produced 2.46 grams of water combustion... The most effective burning of the complete combustion reactions are known to form carbon dioxide water! 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