861 past contests
Topic 8 · True or false: atomic number does not track density or order of discovery
Topic 15 · True or false: increasing temperature always increases reaction rate
Topic 29 · True or false: rb+ and se2- are isoelectronic (both reach the krypton configuration)
Topic 29 · True or false: cs+ and i- are isoelectronic (both reach the xenon configuration)
Topic 6 · True or false: for a gaseous reaction, changing pressure always changes the equilibrium direction
Topic 6 · True or false: increasing pressure shifts equilibrium toward the side with more moles
Topic 10 · Enthalpy of combustion of methane from given enthalpies of formation
Topic 25 · Dehydrohalogenation converts an alkyl halide to an alkene
Topic 5 · Reduction converts an alkyne to an alkene
Topic 23 · Dehydration converts an alcohol to an alkene
Topic 22 · True or false: primary alcohols can be oxidized to carboxylic acids
Topic 23 · True or false: alcohol water-solubility and oxidation to ketones
Topic 15 · True or false: for a+2b⇌c+3d, the rate law is [a][b]²
Topic 15 · True or false: for a+2b⇌c+3d, the reaction order is three with respect to both reactants
Topic 15 · True or false: for a+2b⇌c+3d, the rate law is k[a][b]²
Topic 11 · Molar mass of a gas from its mass and volume at stp
Topic 5 · Empirical formula of 3-ethyl-4-methyl-1-pentyne, c8h14 reducing to c4h7
Topic 11 · Molar mass of a gas from its effusion rate relative to helium, via graham's law
Topic 25 · Free-radical bromination product of 2-methylpropane, favoring the tertiary radical
Topic 25 · Free-radical bromination product of butane, favoring the more stable secondary radical