Photo-electrochemical cells (PEC\'s) are modeled after the photosynthetic system
ID: 533120 • Letter: P
Question
Photo-electrochemical cells (PEC's) are modeled after the photosynthetic systems found in plants. Photosynthesis atoms plants to use sunlight as driving force to create what chemicals? The catalysts in the PEC perform what function? Convert the sunlight directly into electrical energy similar to a solar cell. Catalyze the oxidation and reduction half reactions needed to decompose water into oxygen and hydrogen. Provide the heat needed to decompose water into oxygen and hydrogen. All of these are correct. What are the limitations of current catalysts used in PEC's? Current catalysts are not very efficient. Current catalysts are comprised from expensive and rare metals. Current catalysts are not very stable under the PEC reaction conditions. All of these are correct. The hydrogen fuel produced from a PEC is used for what purpose? What are the advantages of fuel cell vehicles (FCVs) over battery-electric vehicles (BEVS)? a) Fuel cells never "die" so long as the external reactants (chemical fuel) are being fed into the fuel cell. b) Fuel cell react ant tanks can be refilled much faster than charging a battery. c) Fuel cells are much more efficient than batteries (in other words, it takes less energy to move the vehicle the same distance). a and b are both correct a, b, and c are all correctExplanation / Answer
Answer 1
During PHotosynthesis, light energy is used to make energy stored molecules like ATP and NADPH which further reduced to sugars. And also oxygen is released during PHotosynthesis.
Hence option c) is correct