When zinc in its metallic form and hydrochloric acid are combined, they form hydrogen gas and an aqueous solution of zinc chloride. This type of a reaction is called an oxidation reduction reaction.Continue Reading
The chemical equation for this reaction is written: Zn(s) + 2HCl(aq) ? H2(g) + ZnCl2(aq).
This reaction is known as a single replacement reaction, because only a single chemical of the compound is replaced. The hydrogen is replaced in its combination with the zinc.
The reaction is called an oxidation reaction because one element loses electrons and another gains electrons. The process of gaining an electron is known as reduction. The process of losing an electron is known as oxidation. In the reaction between zinc and hydrochloric acid, the zinc atoms are oxidized and lose two electrons. Since the zinc is oxidized and the reaction needs to remain balanced, the hydrogen atoms are reduced.
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. 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.Learn more about Chem Lab
The chemical reaction between magnesium and hydrochloric acid produces magnesium chloride and hydrogen. The balanced chemical equation for this reaction is 2HCL(aq) + Mg(s) produces MgCl2(aq) +H2(g), where the subscripts refer to the substance's form, such as aq stands for aqueous, g is a gas, and s is a solid.Full Answer >
Iron reacts with hydrochloric acid to produce dihydrogen and iron(II) chloride. When an HCl solution is added to iron powder, the H+ and Cl- ions from hydrochloric acid disassociate. The Cl- anions form ionic bonds with iron to form FeCl2. The H+ ions pair up, and release as hydrogen gas.Full Answer >
The melting point of a 10 percent solution of hydrochloric acid is -18 degrees Celsius, while the melting point of a 20 percent solution is -59 degrees Celsius. The melting point varies based on the concentration of the solution.Full Answer >
The pH of hydrochloric acid is 0. This reading is taken from a solution of 1 mole of hydrochloric acid. A less concentrated solution of the acid, such as a 0.5-mole solution, has a higher pH, meaning it would be less acidic.Full Answer >