1917-18 Lieutenant Colonel, U.S. Army, Chemical Warfare Service
1922 Distinguished Service Medal, U.S. Army
1936 Manager, U.S. Olympic Ski Team
1937-40 President, Sierra Club
1942-43 Expert Consultant, Military Planning Division, Quartermaster Corps
1942-43 Member, Chemical Referee Board of Production Research and Development, War Production Board
1943-44 Scientific Liaison Officer, Office of Scientific Research and Development, American Embassy, London
1948 King's Medal for Service in the Cause of Freedom, United Kingdom
1958-60 Member, Citizen's Advisory Committee to the Joint Education Committee of the California Legislature
1939 New York Section, William H. Nichols Medal
1949 Maryland Section, Remsen Award
1952 Scientific Apparatus Makers Association Award for the Teaching of Chemistry
1953 Chicago Section, Willard Gibbs Medal
1961 Northeastern Section, James Flack Norris Award in Teaching of Chemistry
1962 Priestley Medal
1936 Faculty Research Lecture, University of California, Berkeley
1944 Guthrie Lecture, Physical Society, London
1944 Walker Memorial Lecture, University of Edinburgh Chemical Society
1952 Reilly Lectures, Notre Dame University
1953 Romanes Lecture, Royal Society of Edinburgh
1953 Spiers Memorial Lecture, Faraday Society
1954 Treat B. Johnson Lectures, Yale University
1956 Bampton Lectures in America, Columbia University
1957 W.A. Noyes Lecture, University of Illinois
1963 William Procter Prize, R.E.S.A.
1965 Joseph Priestley Award, Dickinson College
1971 Gilbert Newton Lewis Memorial Lecture, University of California, Berkeley
1974 S. C. Lind Lecture, Oak Ridge National Labaratory
1978 Clark Kerr Medal for "distinguished service to higher education," University of California Academic Senate