the hydrogen) is formed. The final grade will be determined by the electronic balance! After the bubbling had ceased, it was observed that a precipitate had formed.This precipitate was zinc chloride. Despite the fact that your stomach produces hydrochloric acid, the zinc in food and supplements doesn't react with stomach acid, because the zinc is not in elemental form. When the .5 gram zinc sample was originally placed in the 40 ml solution of hydrochloric acid, it began to bubble as the hydrochloric acid broke down the zinc. Measure out 5 mL of 0.01M Hydrochloric Acid with the Graduated Cylinder and pour it into a test tube using a funnel 2. 5 mL of 1.0M Hydrochloric Acid; 6 strips of zinc metal; Funnel; Safety Goggles; Timer; Procedure: 1. Drop 1 strip of zinc in the test tube and record the time it takes for the zinc metal to completely dissolve 3. The zinc reaction produces the heat and hence has the negative enthalpy. In this lab, we balanced the equation xZn(s) + yHCl(aq) → ZnxCly (s) + y/2H2(g) by the information obtained from the lab. This reaction generates the very flammable element H2, or hydrogen gas. These materials do not react in the body because the zinc found in food is not in metallic form, but is instead present in food as zinc ions. the zinc) disappears. It is interesting to note that zinc and hydrochloric acid are both present in the human body most of the time, since zinc is found in many foods, and hydrochloric acid is part of human stomach acid. When zinc and hydrochloric acid are mixed together, the reaction took place in an evaporating dish that was accompanied by hydrogen gas. kappsd5 kappsd5 Answer: The metal zinc readily reacts with hydrochloric acid to produce hydrogen gas (H2) and zinc chloride (ZnCl2). 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. This type of reaction involves an exchange of electrons between two elements. Through calculations, available on the experiment page, it was determined that the precipitate was zinc chloride. Add your answer and earn points. Zinc in Hydrochloric Acid Lab Name: Jeremy Lopez Partner: Aryia Alaghband Date: Mar.4/13 Purpose: To observe a chemical reaction both qualitatively (descriptions – use … Zinc is a metallic element that reacts with hydrochloric acid when it's in its elemental state. The interaction of the hydrochloric acid and zinc is called an oxidation-reduction reaction. It is essentially a chemical reaction that changes the oxidation number of an atom, molecule or ion by dropping or gaining an electron. zinc + hydrochloric acid -> zinc chloride + hydrogen Then there are two possible ways of measuring the rate: 1) Measure how quickly one of the products (e.g. If we consider a reaction e.g. It is also referred to as a redox reaction. Zinc hydrochloric acid experiment lab activity 1 See answer pranavdeepak is waiting for your help. 2) Measure how quickly one of the reactants (e.g. Zinc.