Which metal catalyses the hydrogenation of polyunsaturated fats and oils into saturated ones?
APlatinum
BRhodium
CTungsten
DNickel
Answer & Solution
Correct answer: D. Nickel
1. Hydrogenation adds hydrogen across carbon to carbon double bonds on a solid metal surface.
2. The metal used for hydrogenating polyunsaturated fats and oils is nickel.
3. Platinum with rhodium coats three way catalytic converters, a different application altogether.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.7 Catalysis_
Related questions
What forms when a substrate binds at an enzyme's active site during catalysis?Which enzyme model pictures the active site as flexible, changing shape to bind its substrHeterogeneous catalysis proceeds through at least four steps. Which comes first?Above 225 degrees Celsius, NO2 + CO giving NO + CO2 follows rate = k[NO2][CO]. With what kNitric oxide reacting with chlorine, 2NO + Cl2 giving 2NOCl, appears to occur as an elemenA reaction diagram shows a forward activation energy Ea and an enthalpy change delta H. WhIn the Arrhenius equation k = Ae^(-Ea/RT), what does the exponential factor represent?When carbon monoxide collides with an oxygen molecule, which collision orientation is more