AS & A Level Chemistry (9701) — May–June 2023, Paper 22
5 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The melting points of some solids are shown in Table 1.1: magnesium 923 K; phosphorus 317 K; sodium chloride 1074 K; sulfur 392 K. State the type of bonding present in magnesium…
Answer this question and get it marked →Chlorine is a reactive element. It forms many compounds. Complete Table 2.1 to show the maximum oxidation number of the elements Na, Mg, Al, Si and P in their chlorides.
Answer this question and get it marked →Fig. 3.1 describes a sequence of reactions used to produce a food additive, compound Y, from CH3CH2Cl. Step 1: CH3CH2Cl - X (CH3CH2CN). Step 2: X + dilute acid - CH3CH2COOH. Step…
Answer this question and get it marked →In industry, ethanol is made by reacting ethene with steam in the presence of H3PO4. reaction 1: C2H4(g) + H2O(g) <= C2H5OH(g) Use the bond energy values in Table 4.1 to calculate…
Answer this question and get it marked →Describe structural isomerism.
Answer this question and get it marked →