130s Classroom → 35s Sub-90 Target27-Q Chemistry Mock
Archetype Sub-90 Dry-Wipe Invariant (Oxidation State Assignment, Redox Disproportionation & Ionic Half-Equation Balancing): For disproportionation, look for a free element (e.g. Cl2, Br2, Cu+) or intermediate oxide (NO2, H2O2) on the LEFT that appears in TWO different products on the RIGHT with one higher and one lower oxidation state.
sub90 ESATARCH-C-05: Oxidation State Assignment, Redox Disproportionation & Ionic Half-Equation BalancingChemistry
00:00.0
SUB-90 ZONE (<50S)
0.0s50s Sub-9090s ESAT Budget150s Classroom
Right-click any option to cross out • Keys
A–E + EnterQuestion 1 of 31 • 90s Target
Ready to Start Question 1?
The question stem, diagram, and answer options are hidden behind this pre-start gate. When you click below, the question will reveal and your 90-second split stopwatch will immediately begin ticking.
Chemistry•ARCH-C-05•1-2-3 Multi-Statement
or press Enter to start