Question

can u guys please answer i have a test im taking now

X 2 pts G Calculate the concentration in res/37115/quizzes/276177/take Question 30 Catalysts are correctly characterized by which of the following statements? They do not actively participate in a reaction. They speed up a chemical reaction by increasing the activation energy for the reaction. They are involved in the chemical reactions but are not consumed. They speed up a chemical reaction by increasing the kinetic energy of the reactions 2 pts D Question 31 Consider the following redox equation: CO )+H() CO1g) + H2O(g) Choose an appropriate chemical formals from the list that identifies the substance oxidized. CO HO о со О на MacBook Air COC G90 . 55 FB $ A - 3 % 5 4 & 7 6 * oo 8 9 0

Answer 1

30. Answer is C ( they are involved in the chemical reactions but are not consumed )

A catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction. A catalyst will appear in the steps of a reaction mechanism, but it will not appear in the overall chemical reaction (as it is not a reactant or product).

31. Answer is D ( H₂ )

Oxidation number of Hydrogen increases from 0 to +1.