Hydrochloric acid is an acid because it has hydrogen ion.The formula for hydrochloric acid is HCl.It is a strong acid. Dil. Lead does not react with sulphuric acid, due to the passivated PbO surface. The hydrochloric acid is an acid of containing one proton, whereas the sulfuric acid is an acid of containing two protons. Hydrochloric acid does not contain hydroxyl group in the molecule; on the flip side, sulfuric acid contains two hydroxyl groups in the molecule. This acid is a colorless solution of HCl gas in water. In dry air Cd reacts very slowly with H 2 S forming CdS. When sodium thiosulphate is added to a solution of hydrochloric acid, an insoluble precipitate of sulphur (S) is formed. The value of pKa of the hydrochloric acid is generally greater than the pKa value of sulfuric acid, on the flip side the value of pKa of sulfuric acid is generally less than the pKa value of hydrochloric acid. Hydrochloric acid has weak chemical properties, whereas the sulfuric acid has strong chemical properties. Hydrochloric acid and sulfuric acid are two strong acids. The chemical properties of hydrochloric acid are very weak; on the other hand, the chemical properties of sulfuric acid are very strong. Apart from that, hydrochloric acid is a mild reducing agent. The main difference between hydrochloric acid and sulfuric acid is that the hydrochloric acid is the type of mineral acid that contains only one proton in the compound, whereas the sulfuric acid is the type of mineral acid that contains only two protons in the compound. Sulfuric acid is commonly supplied at concentrations of 78, 93, or 98 percent. 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. The time taken for the same amount of yellow precipitate to be produced provides a method of measuring the rate of reaction at different concentrations. The chemical formula of Hydrochloric acid is given as HCl. Hydrochloric Acid and Sodium Hydroxide Hello,you are in right place to know about the reaction between hydrochloric acid and sodium hydroxide. 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. 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. But the corrosiveness depends on its concentration. Molar mass of the HCl is about 36.5 g/mol. A hydrochloric acid molecule is composed of hydrogen (H) and chlorine (Cl) atoms. This mixture of sulfuric acid and water boils at a constant temperature of 338 °C (640 °F) at one atmosphere pressure. The hydrochloric acid also acts as a nucleophile in some chemical reactions as it contains a chlorine atom in the compound. The balanced equation for the reaction of lead with hydrochloric acid is Pb(s) + 2HCl(aq) ---> PbCl2(s) + H2(g) Hydrochloric Acid: Hydrochloric acid is monoprotic and releases one proton per molecule. To manufacture dyes, explosives, detergents, and drugs. H2SO4(aq)    +       H2O(l)       →     HSO4–(aq)   +       H3O+(aq), HSO4–(aq)    +       H2O(l)       →    SO4-2(aq)     +       H3O+(aq). That means it can release two protons per molecule. Web. But when it is diluted, the oxidizing strength is reduced. The chemical formula of hydrochloric acid is HCl; on the other hand, the chemical formula of sulfuric acid is H2SO4. 27 June 2017. Sulfuric Acid: The molar mass of sulfuric acid is about 98 g/mol. The hydrochloric acid is the acid that has its ability to donate one proton in the aqueous solution. Sulfuric Acid: Sulfuric acid is a strong acid composed of hydrogen, sulfur and oxygen atoms. “Hydrochloric acid.” Hydrochloric acid – New World Encyclopedia. Hydrochloric acid is a weaker acid than the sulfuric acid; on the flip side, sulfuric acid is the stronger acid than the hydrochloric acid. The sulfuric acid is the acid that is also known as the dibasic. 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 hydrochloric acid is the acid that is usually known as a weak reducing agent. 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. Sodium thiosulphate reacts with Hydrochloric acid reacts to form yellow precipitate of sulphur. The sulfuric also acts as a nucleophile in some chemical reactions as it contains Sulphur atom in the compound. The reaction increases with increasing moisture in the air [5]. But it has a high pKa value. Sodium sulfite (NaSO3) is a salt of the sulfurous acid. 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. It undergoes redox reactions with strong oxidizing agents such as MnO2.