Aqa A-Level Chemistry Paper 2 |117 Questions| With Correct Answers.

Maxwell-Boltzmann distribution x and y axes {Ans: x: Energy y: fraction/number of molecules}Mean bond enthalpy {Ans: The average energy needed to break a certain type of bond over a range of compounds}Test for carboxylic acids {Ans: Sodium carbonate and effervescence is positive}Test for acyl chloride {Ans: Warm with silver nitrate gives steamy fumes of Hack and white ppt of AgCl}What leads to a lower chemical shift value for H NMR? {Ans: 1H with more electrons around them/further away fromelectronegative atoms}What does the area under the peak represent for 1H NMR? {Ans: The area under the peak is proportional to the number of 1H atoms represented by the peak}Equations for formation of an ester (acid catalyst) {Ans: carboxylic acid + alcohol > ester + water acyl chloride + alcohol > ester + HCl}What relationship between a sample and the mobile phase makes the sample move faster? {Ans: More soluble components/components with more affinity to the solvent move faster}Products of thermal cracking {Ans: High % of alkenes}What kind of environment Leads to a greater chemical shift? {Ans: A C atom next to a more electronegative atom has a greater chemical shift}What does