Chem Transition HW Flashcards
Electron configuration of chromium
The 4s and 3d orbitals all are half-filled.
The electron repulsion between the outer electrons is minimised resulting in increased stability.
Electron configuration of copper
The 3d orbitals are all filled.
The electron repulsion is minimised causing increased stability
Haber process
Iron metal catalyst
Increase rate, decrease temp
Contact process
2SO2 + O2–> 2SO3
V2O5
Hydrogenation of alkenes
Nickel metal
Lower temp and pressure
Decomposition of hydrogen peroxide
MnO2 to increase rate
Decomposition can be used to produce oxygen gas
Copper(II) hydroxide
Pale blue precipitate
Cobalt(II) hydroxide
Pink solution forms blue precipitate which turns beige in the presence of air
Iron(II) hydroxide
Pale green solution forms a green precipitate which turns rusty brown in air
Iron(III) hydroxide
Pale yellow solution forms a rusty brown precipitate
Potassium dichromate
Orange crystalline solid
Potassium manganate
Purple solid
Why our zinc and scandium not transition metals
They don’t form any ions with partially filled d-orbitals.
Sc 3+
Zn2+
