This experiment was intended for comparing the H of the reaction involving zinc and hydrochloric acid obtained when Styrofoam and market brand calorimeters are used. Hydrochloric acid reacts with active metals such as zinc to form zinc chloride and liberate hydrogen gas. A common experiment in chemistry class is the reaction of zinc and hydrochloric acid. Add 0.25g Zinc to the Erlenmeyer flask -150mL Chemicals inside: 1. The purpose of this experiment is to determine if the amount of zinc and hydrochloric acid will effect the percentage of the zinc in the out coming solution. What observations did you make when the hydrochloric acid and zinc were combined? safety goggles. The rate of hydrogen gas formation allows us to observe the reaction rate conveniently. In this experiment we will compare the reaction rates of diluted hydrochloric acid with zinc powder and zinc granules. 1. In this lab, students calculate how many zinc and chlorine atoms take part in the reaction, and then predict the mass of the solid product. Doc attached. Aim: The aim of my experiment is to find out the rate of reaction between Hydrochloric acid (HCL) and Magnesium (Mg) in different temperatures. The final grade will be determined by the electronic balance! Zn 2. HCl reacts with sodium carbonate to … 20 grams of zinc (mesh, NOT powder) 40 mL of dilute hydrochloric acid (6 M) lighter. Repeat the experiment with a new flask and gas piston, using 0.25g of zinc and 20 mL of HCl. Sources of error: During the experiment, several factors could have possibly affected the results of the observations. 2. To perform this experiment, a scientist begins by adding a small amount of hydrochloric acid to a … Answer: When the hydrochloric acid and zinc were combined, the mixture bubbled, the pressure increased from 1 atm to 1.71 atm, and the temperature increased from 21.5 to 26.5 degrees celsius. We can use a gas syringe to measure the reaction of metals with dilute acid. The experiment also sought to determine the specific heat capacity of Styrofoam. Concepts • Average atomic mass • Mole concept 11. In the litmus test experiment the blue litmus solution turns to red when hydrochloric is added. These are the results of the lab. this forms hydrochloric acid.The compound breaks apart into hydrogen and chlorine ions:$$\ce{H2O + HCl -> H+ + Cl-}$$ Hydrochloric acid completely dissociates, meaning that every $\ce{HCl}$ molecule yields one $\ce{H^+}$ ion. The products that will be formed are Magnesium Chloride (MgCl2) and Hydrogen (H2). Metals with dilute acid. Attach balloon to rubber arm of flask. It is a single replacement reaction where zinc replaces the hydrogen. Pour … When zinc was added to hydrochloric acid, hydrogen gas and zinc sulfate were produced, therefore the hypothesis was supported. Essentialy, acids increase the amount of $\ce{H^+}$ in solution. Therefore acids such as HCl show acidic character. Reaction Between Zinc And Hydrochloric Acid. The speed of the reaction also depends on the mass of the Zinc used in the experiment. I do not know how to do the calculations. Pour the dilute hydrochloric acid into the flask, being careful not to get it on the hole in the side. Directions: 1. We are reacting zinc metal with hydrochloric acid to produce a compound of zinc and chlorine atoms. Hypothesis: I believe that the most concentrated the HCl is, the faster the reaction will be. O2 moles: 0.01243, vol; 149.96mL 3. Zinc metal reacts with diluted hydrochloric acid to give zinc chloride and hydrogen gas. Typical rate of reaction experiments. When hydrochloric acid and zinc are combined, they create hydrogen gas and zinc chloride, which is a salt. light stick. AIM: The purpose of this experiment is to find out what determines the speed of a reaction (in this case, between Hydrochloric Acid and Zinc).