Ammonia, \( NH_3 \), and nitrous acid, \( HNO_2 \), are compounds of nitrogen. What are the oxidation states of
Paper Type: paper-1a
M25-CHEM-HL-TZ1-P1A-Q35
Below is a reactivity series of selected elements, arranged from highest activity to lowest: Zn > Fe > Cd >
M25-CHEM-HL-TZ1-P1A-Q36
Which alcohol and conditions would produce the highest yield of methylpropanoic acid?
M25-CHEM-HL-TZ1-P1A-Q37
Which correctly describes the heterolytic bond fission of a bromine molecule (\( Br_2 \))?
M25-CHEM-HL-TZ1-P1A-Q38
What is the role of the \( CN^- \) ion in the reaction of 1-chloropropane with excess KCN in ethanol?
M25-CHEM-HL-TZ1-P1A-Q10
Nitrogen(I) oxide, \( N_2O \), can be represented by two Lewis formulas. Structure X has a triple bond between the
M25-CHEM-HL-TZ1-P1A-Q30
The following results were obtained from the acid-catalysed reaction between iodine, \( I_2 \), and propanone, \( CH_3COCH_3 \). Experiment
M25-CHEM-HL-TZ1-P1A-Q31
The acid-catalysed reaction between iodine and propanone was carried out at various temperatures. A graph of \( \ln k \)
M25-CHEM-HL-TZ1-P1A-Q24
The table shows enthalpy of combustion data for several substances: \( C_2H_6 \) is \( -1561 \, kJ \, mol^{-1}
M25-CHEM-HL-TZ1-P1A-Q29
Consider the following system at equilibrium: \( N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g) \) (\( \Delta H_r^{\ominus} = -46 \, kJ