Chemistry, 22.02.2020 01:27 temperent6049
Thallium(I) is oxidized by cerium(IV) as follows:
Tl+(aq) + 2Ce^4+(aq) > Tl^3+(aq) + 2Ce^3+(aq)
The elementary steps, in the presence of aqueous Mn(II), are as follows:
Step 1: Ce^4+ + Mn^2+ > Ce^3+ + Mn^3+
Step 2: Ce^4+ + Mn^3+ > Ce^3+ + Mn^4+
Step 3: Tl^+ + Mn^4+ > Tl^3+ + Mn^2+
(a) Identify the catalyst, intermediates, and the rate-determining step if the rate law is rate = k[Ce^4+][Mn^2+](b) Explain why the reaction is slow without the catalyst.(c) Classify the type of catalysis (homogeneous or heterogeneous).
Answers: 3
Chemistry, 22.06.2019 21:30, leenzazou587
Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.
Answers: 1
Chemistry, 22.06.2019 22:30, skinniestoflegends
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
Thallium(I) is oxidized by cerium(IV) as follows:
Tl+(aq) + 2Ce^4+(aq) > Tl^3+(aq) + 2Ce^3...
Tl+(aq) + 2Ce^4+(aq) > Tl^3+(aq) + 2Ce^3...
Mathematics, 14.02.2020 02:47