But silicon reacts with HCl to form silicon tetrachloride and releases hydrogen. Because of the need to form tetravalent covalent bonds with Si, other acids do not react with it.

Ge + 4HNO3 → GeO2 + 4NO2 + 2H2O Germanium react with nitric acid to produce germanium(IV) oxide, nitrogen dioxide and water. Nitric acid – concentrated solution.

Silicon does not react with most acids under normal conditions but is dissolved by hydrofluoric acid, HF, a reaction apparently deiven by the stability of the Si(IV) fluoride complex [SiF6]2-.

When zinc reacts with hydrochloric acid it produces zinc chloride and hydrogen gas.

Why does Zinc react slowly with hydrochloric acid? Explain why zinc reacts more slowly with dilute hydrochloric acid than with concentrated hydrochloric acid? This allows more zinc atoms per second to be ionized (reducing the hydrogen in the process) and dissolve into the solution.

Example. Will Zinc metal readily dissolve when added to HCl? Adding the two half-reactions together gives the overall equation and a positive value for E0. This means the reaction is spontaneous and Zn will dissolve in HCl.

Potassium and sodium are placed at the top of the reactivity series. They are highly reactive towards dilute sulphuric or hydrochloric acid. They react violently with dilute acids and cause explosions.

Potassium reacts with dilute hydrochloric acid to give potassium chloride and hydrogen gas. Heating small pieces of Potassium in air results in the substance melting without any flame being seen and turning instantly into a mixture of potassium peroxide and potassium super oxide.

Potassium reacts violently on contact with powerful oxidizers and water. Do not grind potassium or heat it. Upon contact with water, acids or alcohols, potassium produces an exothermic reaction involving release of flammable hydrogen gas. Oxidized potassium may explode upon handling.

Potassium permanganate solution (KMnO4) is often used in analytical chemistry as an oxidising titrant for redox titrations. The potassium permanganate and hydrochloric acid will result in chlorine gas being evolved.

Potassium metal reacts very rapidly with water to form a colourless basic solution of potassium hydroxide (KOH) and hydrogen gas (H2). The reaction continues even when the solution becomes basic. The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic.

Adding magnesium metal to hydrochloric acid produces hydrogen gas. The magnesium dissolves to form magnesium chloride, MgCl2.

Reaction of calcium with acids Calcium metal dissolves readily in dilute or concentrated hydrochloric acid to form solutions containing the aquated Ca(II) ion together with hydrogen gas, H2.

When dilute Hydrochloric acid is added to iron filings, iron(II) chloride & hydrogen gas is produced. In this reaction iron displaces hydrogen from hydrochloric acid to form iron chloride & hydrogen gas this reaction is a single displacement reaction.

Yes, it is obvious that copper will not react with hydrochloric acid for the simple reason it’s below hydrogen in the reactivity series. So, copper cannot replace the hydrogen in HCl to form CuCl2 . Hence, when copper (Cu) reacts with hydrochloric acid (HCl) there will be no reaction.

In a reaction between calcium carbonate and hydrochloric acid, the products calcium chloride, carbon dioxide and water are formed.

When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate. Lime reacts with acidic gases like sulfur dioxide.

When you mix acid with water, it’s extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid.