But it has a high pKa value. Hydrochloric Acid: The molar mass of hydrochloric acid is about 36.5 g/mol. HCl + H2O → Cl– + H3O+. The chemical formula of hydrochloric acid is HCl as it has hydrogen and chlorine atom in the chemical composition. Molar mass of the HCl is about 36.5 g/mol. But when it is diluted, the oxidizing strength is reduced. The hydrochloric acid gives one proton to one molecule in the solution, whereas the sulfuric acid gives two protons to one molecule in the solution. This is because it easily dissociates due to high Ka and Cl– ion forms the salt with the cation of the base. The ionization of hydrochloric acid in water occurs in one step; on the flip side, the ionization of sulfuric acid in water occurs in two steps. It also has more prominent catalytic power in reactions of chemistry. Hydrochloric acid is the type of the weaker acid; on the flip side, sulfuric acid is the type of the stronger acid. Molar mass of the HCl is about 36.5 g/mol. The chemical formula of Hydrochloric acid is given as HCl. Sulfur does not react with hydrochloric acid. 1. What is Hydrochloric Acid – Definition, Properties2. Hydrochloric acid is generally the example of monoprotic acid; on the other hand, sulfuric acid is generally the example of a diprotic acid. This mixture of sulfuric acid and water boils at a constant temperature of 338 °C (640 °F) at one atmosphere pressure. The chemical formula of sulfuric acid is H2SO4 as it has hydrogens, oxygen, and Sulphur atoms in the chemical composition. The formula mass of hydrochloric acid is 36.5 gram per mole while the formula mass of sulfuric acid is 98 gram per mole. The above discussion concludes that both the hydrochloric acid and sulfuric acid are types of mineral acids. The catalytic power of hydrochloric acid is less prominent than that of sulfuric acid, whereas the catalytic power of sulfuric acid is greater than that of hydrochloric acid. When heated, the pure acid partially decomposes into water and sulfur trioxide; the latter escapes as a vapour until the concentration of the acid falls to 98.3 percent. Lead does not react with sulphuric acid, due to the passivated PbO surface. Sulphur dioxide (SO 2) and water (H 2 O) are also formed, but it is the solid sulphur that has the biggest impact here. We do not implement these annoying types of ads! 2. He graduated from the University of California in 2010 with a degree in Computer Science. Hydrochloric acid is an acid because it has hydrogen ion.The formula for hydrochloric acid is HCl.It is a strong acid. The reaction increases with increasing moisture in the air [5]. The pH of the hydrochloric acid is greater than the pH of sulfuric acid while the sulfuric acid has a pH little less than the pH of the hydrochloric acid. The sulfuric acid is the acid that has its ability to donate two protons in the aqueous solution. Hydrochloric acid and sulfuric acid are two strong acids. What is the difference between Hydrochloric Acid and Sulfuric Acid – Comparison of Key Differences, Key Terms: Chemical Formula, Diprotic, HCl, H2SO4, Hydrochloric Acid, Ionization, Monoprotic, Sulfuric Acid. Hydrochloric acid has one hydrogen and one chlorine atom in the composition of the formula, on the contrary, sulfuric acid has two hydrogens, four oxygen and one sulfur atom in the composition of the formula. Acids are molecules which are capable of donating protons or H+ ions to an aqueous solution. The balanced equation for the reaction of lead with hydrochloric acid is Pb(s) + 2HCl(aq) ---> PbCl2(s) + H2(g) That means it can release two protons per molecule. The value of pH of the hydrochloric acid is greater than the pH of sulfuric acid while the sulfuric acid has a pH little less than the pH of the hydrochloric acid. The reaction between HCl and water can be given as below. Hydrochloric Acid: Hydrochloric acid is a strong acid composed of hydrogen and chlorine atoms. It undergoes redox reactions with strong oxidizing agents such as MnO2. The hydrochloric acid holds only one hydrogen ion; on the other hand, the sulfuric acid holds only two hydrogen ions. Madhusha is a BSc (Hons) graduate in the field of Biological Sciences and is currently pursuing for her Masters in Industrial and Environmental Chemistry. HCl has a large acid dissociation constant value (Ka). The hydroxyl groups are absent in the chemical formula of the hydrochloric acid. Cd (s) + H 2 S (g) CdS (s) [yellow] In strong acids like HCl and H 2 SO 4, Cd 2+ is precipitated by H 2 S as CdS. 27 June 2017. The sulfuric acid is the strong acid and has low pKa value that is present in the liquid form at the room temperature. Hydrochloric acid is generally the monobasic acid; on the other hand, the sulfuric acid is generally the dibasic acid.