A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products.


'Über Katalyse', Zeitschrift für Elektrochemie, 1901, 7, 995–1004. Quoted in J. R. Partington, A History of Chemistry, Vol. 4 (1901), 599–600

Wolfgang Ostwald Quotes

A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products.

A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products.

A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products.

A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products.