Junior high school chemistry: Can dilute sulfuric acid react with active metals to produce hydrogen?

When using active metals such as iron or zinc and dilute sulfuric acid or dilute hydrochloric acid to produce hydrogen, adding a small amount of copper sulfate solution can speed up the reaction of hydrogen, because the active metals and copper sulfate are replaced to generate simple copper, and the simple copper and metal form primary cells in acidic solution, which greatly speeds up the reaction. A galvanic cell is a device that converts chemical energy into electrical energy. The potential difference between two electrodes is used to generate potential difference, which makes electrons flow and generate current. The history of the invention of the primary battery can be traced back to the end of18th century, when Italian biologist Gavagni was conducting a famous frog experiment. When he touched the frog leg with a metal scalpel, he found that the frog leg would twitch. The famous Volta believes that this is caused by the current stimulation between metal and frog leg tissue fluid (electrolyte solution). 1800, Volta designed a device called Volta reactor, with zinc as the negative electrode, silver as the positive electrode and brine as the electrolyte solution. 1836, Daniel invented the world's first practical battery and used it in the early railway signal lights. Working principle of galvanic cell: The galvanic cell reaction belongs to exothermic reaction, generally it is redox reaction, but different from the general redox reaction, the electron transfer is not completed by the effective collision between oxidant and reductant, but the reductant loses electrons at the negative electrode to produce oxidation reaction, and the electrons are transported to the positive electrode through external circuit, and the oxidant gains electrons at the positive electrode to produce reduction reaction, thus completing the electron transfer between reductant and oxidant. The directional movement of ions in the solution between the two electrodes and the directional movement of electrons in the outer wire form a closed loop, which makes the two electrodes react continuously, produces an orderly electron transfer process, produces a current, and realizes the transformation from chemical energy to electrical energy. Composition of primary battery: ① The electrode material is composed of two metals or metals with different metal activities and other conductive materials (nonmetals or some oxides, etc.). (2) electrolyte exists. (3) There is a wire connection between the two electrodes to form a closed loop. ④ The reaction is spontaneous redox reaction.