which scientist discovered that increased temperature speeds up the rate of the dark carbon reducing reactions?

a. van Helmont
b. Priestly
c. Ingenhousz
d. van Hiel
e. Blackman

I think it is b. Priestly

To determine which scientist discovered that increased temperature speeds up the rate of the dark carbon reducing reactions, we can analyze the options provided and highlight the relevant information. Here is an explanation of each scientist and their contribution:

a. van Helmont: Jean-Baptiste van Helmont was a Flemish chemist and physician. However, his work was not directly related to the dark carbon reducing reactions or temperature.

b. Priestley: Joseph Priestley was an English chemist and theologian known for his discovery of various gases, including oxygen. Although his work was revolutionary in understanding gases, it does not specifically relate to the dark carbon reducing reactions or temperature.

c. Ingenhousz: Jan Ingenhousz was a Dutch physician and chemist. He conducted experiments on the process of photosynthesis, including the discovery that plants produce oxygen in the presence of light. However, his work does not directly address the effect of temperature on the dark carbon reducing reactions.

d. van Hiel: There is no prominent scientist or researcher named van Hiel associated with the discovery of the relationship between temperature and the rate of dark carbon reducing reactions.

e. Blackman: Ronald Ross Blackman was a British plant physiologist. He conducted extensive research on the effect of temperature on the rate of photosynthesis. His work led to the identification of the temperature optimum and compensation point, revealing the relationship between temperature and the dark carbon reducing reactions.

Based on this analysis, the correct answer is e. Blackman.