ib-diploma – Page 12 – Vertex Learnbox

M25-CHEM-HL-TZ1-P1A-Q22

Which equation correctly shows both enthalpy of formation, \( \Delta H_f^{\ominus} \), of a compound and enthalpy of combustion, \(

0.050 mol of sodium hydrogencarbonate was added to \( 50 \, cm^3 \) of \( 2.0 \, mol \, dm^{-3}

Chloroethane is produced by the reaction of ethane with chlorine: \( C_2H_6(g) + Cl_2(g) \rightarrow C_2H_5Cl(g) + HCl(g) \). The

Which of the following reactions will have the largest positive change in entropy?

Which row puts these molecules in order of decreasing bond \angle?

Kekul\acute{e} suggested a structure of benzene with alternating single and double bonds. Which piece of evidence disproves this structure?

Germanium has several stable oxidation states. Which row shows these species in order of increasing radius?

Which statement explains the trend in first ionisation energy from sodium, Na, to chlorine, Cl?

The volume of a container filled with a fixed amount of gas is increased by 100% at constant temperature. How

Which diagram shows the correct electron configuration of a nitrogen atom in the ground state?