paper-1a – Page 10 – Vertex Learnbox

M25-CHEM-HL-TZ1-P1A-Q34

Ammonia, \( NH_3 \), and nitrous acid, \( HNO_2 \), are compounds of nitrogen. What are the oxidation states of

Below is a reactivity series of selected elements, arranged from highest activity to lowest: Zn > Fe > Cd >

Which alcohol and conditions would produce the highest yield of methylpropanoic acid?

Which correctly describes the heterolytic bond fission of a bromine molecule (\( Br_2 \))?

What is the role of the \( CN^- \) ion in the reaction of 1-chloropropane with excess KCN in ethanol?

Nitrogen(I) oxide, \( N_2O \), can be represented by two Lewis formulas. Structure X has a triple bond between the

The following results were obtained from the acid-catalysed reaction between iodine, \( I_2 \), and propanone, \( CH_3COCH_3 \). Experiment

The acid-catalysed reaction between iodine and propanone was carried out at various temperatures. A graph of \( \ln k \)

The table shows enthalpy of combustion data for several substances: \( C_2H_6 \) is \( -1561 \, kJ \, mol^{-1}

Consider the following system at equilibrium: \( N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g) \) (\( \Delta H_r^{\ominus} = -46 \, kJ