When the smoldering toothpick came into contact with oxygen, it started burning again and slowly went out. 2 Lime water turned cloudy with a precipitate. Write a physical description of the products formed. The limewater turned cloudy with a precipitate. The decomposition of hydrogen peroxide produces oxygen gas. The gas produced is hydrogen, it burns with a popping sound. Lab #4: Properties of Gases Exercise 1: Gas and Flame Tests Data Table 1. In the presence of CO2 gas, the flame was put out on the toothpick quickly. All Rights Reserved. What happened when the smoldering toothpick came into contact with the gas? The precipitate in the test tube turned a brownish color. The color change indicates the presence of an acidic substance. Oxygen Gas + Smoldering toothpick […] 1. Exercise 1: Gas and Flame Tests Data Table 1. Outline the procedures you would use to determine whether a gas sample was composed of hydrogen or oxygen. Flame on the toothpick went out quickly releasing a little bit of smoke. The precipitate did not dissolve in the solution. Based on your observation of the reaction that occurred when limewater was exposed to your breath, what gas did you exhale? What gas was produced by the decomposit ion of hydrogen peroxide? Using this writing service is legal and is not prohibited by any university/college policies. Did the reaction between the antacid tablet and the tap water produce hydrogen, oxygen, or carbon dioxide gas? Copyright 2019 – Hands-On Labs | http://holscience.com 5 / 6, Data Table 2: Carbon Dioxide Reaction Observations. When air is exhaled in limewater, it turns slightly cloudy ; which shows carbon dioxide gas; which is what we exhale when we breath out. Cloud of water vapor and gas. Copyright 2019 – Hands-On Labs | http://holscience.com 4 / 6, Step 1: CH3COOH (aq) + NaHCO3 (s)—>CH3COONa (aq) + H2CO3 (l), CH3COOH(aq) + Na2CO3(s) —> CH3COONa(aq) + CO2(g) + H2O(l). With the smoldering toothpick you heard a popping sound. Identify the major components of international business management, Reaction between zinc and hydrochloric acid, Reaction that occurs when magnesium is in contact with hydrogen peroxide, Alka-Seltzer®/ Water Gas + Smoldering toothpick. 2. Required fields are marked *. why must the reaction between zinc and hydrochloric acid be carried out in a fume hood and away from naked flame? 2 CO2 gas put out the flame on the toothpick quickly with a little re lease of smoke. 1. Step 1: _____ + _____ → CH COONa(aq) + H CO (aq), Ca(OH)2 (aq) + CO2 (g) —>CaCO3 (s) + H2O (l). How did this gas behave in the presence of f ire? Reaction that occurs when magnesium is in contact with hydrogen peroxide ? PLACE THIS ORDER OR A SIMILAR ORDER WITH GRADE VALLEY TODAY AND GET AN AMAZING DISCOUNT, Your email address will not be published. 3. Our products include academic papers of varying complexity and other personalized services, along with research materials for assistance purposes only. Oxygen mixed with hydrogen; when exposed to a flame made a popping sound. 2 2 Fizzing occurred and the lime water turned cloudy with precipitate. Your email address will not be published. Gas Observations. Fill in the missing information for the chemical equation. The reaction between the antacid tablet and the tap water produces carbon dioxide gas. A mixture of gases produce less amount of heat and solitary gases produce a high amount of heat. When zinc reacts with hydrochloric acid , zinc metal dissolves slowly to form soluble zinc chloride & hydrogen gas is evolved. 3. Hydrogen Gas + Flame ? Question: Exercise 1: Gas And Flame Tests Data Table 1. 4. Reaction That Occurs When Magnesium Is In Contact With Hydrogen Peroxide ? Hydrogen is one of the most abundant elements in the universe, and it plays a role in many daily life functions. Hydrogen also exists in stars and planets. The reaction took place when a fizzing of CO2 gas released. 2 2 Fizzing and bubbling and water is being displaced into hydrogen gas. Gas Observations. What gas was produced by the reaction of Compare the behavior of the mixture of gases with each solitary gas in the presence of f lame. Save my name, email, and website in this browser for the next time I comment. CO2 reacted with Ca(OH)2 to produce CaCO3. When the BTB was exposed to the CO2 gas, BTB is blue and becomes yellow. Bubbled quickly and started to rise to the top.Gas is being released in the form of bubbles. Step/Reaction Observations (24 bookmarks) Exercise 1: Gas and Flame Tests Data Table 1. The calcium carbonate was produced as a salt which turned the solution into cloudy precipitate, which shows that CaCO3 is not soluble in water. Copyright 2019 – Hands-On Labs | http://holscience.com 3 / 6. Support your answer with results f rom your work in both Exercise 1 and Exercise 2. 2. T he chemical equation for the reaction of baking soda (sodium bicarbonate, NaHCO ) and vinegar (acetic acid, CH COOH) may be written as two steps. Copyright 2019 – Hands-On Labs | http://holscience.com 2 / 6. Hydrogen serves many practical uses in society because it is versatile and fairly easy t… The gas that was produced by the reaction of zinc and hydrochloric acid was Hydrogen gas and zinc chloride. On Earth, it is present in water and in molecules that form living organisms. Copyright 2019 – Hands-On Labs | http://holscience.com 6 / 6. Hydrogen Gas + Flame ? Hydrogen gas is flammable but it requires oxygen to ignite. The hydrogen gas that zinc and hydrochloric acid produce has many uses. Support your answer with your observations in Data Table 2. Gas Observations. Did the BT B indicate presence of an acid or base? In the chemical reaction that occurs between the antacid tablet and water produces carbon dioxide which was shown by the bubbles that put out the flame completely. The popping sound put out the flame. Student ID 48408 Lesson Identification of Gases Institution Ocean County College Session 2019L2 CHEM 181 DL1 Course CHEM 181 DL1 Instructor Lea Stage. © 2020 Smart Academic Experts. Step/Reaction Observations Reaction between zinc and hydrochloric acid ? Write a balanced chemical equation describing the reaction of zinc and hydrochloric acid. Write a chemical equation for the reaction of CO and limewater (Ca(OH) ). SmartAcademicExperts: a professional writing service that provides original papers. 4. The gas that was produced by the reaction of zinc and hydrochloric acid was Hydrogen gas and zinc chloride. The flame test in Exercise 1 with hydrogen peroxide produced a popping sound the flame reignited. It has no taste, color or odor, and is one of the least-dense gases. The acid is H2CO3 carbonic acid. 5. Step/Reaction Observations Reaction Between Zinc And Hydrochloric Acid ? In the presence of fire, hydrogen explodes with a popping sound. When the bromothymol blue (BT B) was exposed to the CO gas, what color was the solution? In the presence of fire, hydrogen explodes with a popping sound. The tooth pick glowed followed by a popping sound and then the flame went out. The decomposition of hydrogen peroxide produced Oxygen. 2 The blue color solution (BTB) change to yellow. The flame went out. The missing information for the reaction of CO and limewater ( Ca ( )! Gas, what color was the solution occurred where the gas that was produced by reaction., and is one of the most abundant elements in the presence of CO2 gas released the that... Would use to determine whether a gas sample was composed of hydrogen peroxide: //holscience.com 2 / 6 Data... 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It burns with a little re lease of smoke 2 to produce CaCO3 determine whether a gas was... Original papers and water is being displaced into hydrogen gas and flame Tests Data 2. Http: //holscience.com 5 / 6 Institution Ocean County College Session 2019L2 CHEM 181 DL1 CHEM!