Johannes Nicolaus Bronsted was a chemist born in Varde, Denmark, on February 22, 1879, who developed a new theory for acids and bases.

He was the son of a civil engineer. Lost your mother at birth. His father remarried but died when Bronsted was 14 years old.

Overcome his childhood and traumatic adolescence, studied at the Polytechnic Institute of Copenhagen. He arrived at the university and studied Chemical Engineering and obtained his Ph.D. degree in 1908. He became Professor of Inorganic Chemistry and Physical Chemistry at the University of Copenhagen and the Institute. It managed to separate isotopes in 1921 along with the Hungarian György Carl von Hevesy.

In 1923, he presented his most important thermodynamic, the acid-base protonic theory. At the same time, English chemist Tomas Martin Lowry also developed the same theory. The new protonic theory would later bear the name of the two scientists, the Bronsted-Lowry theory.

Bronsted also studied the catalytic properties and strong acids and bases. He also worked in the field of electrolytes in 1927.

During World War II, he opposed the Nazi Party and was elected by the Danish Party. He became ill and died after the elections on December 17, 1947, not holding his political office.