BMAT 2021 Section 2 Question 18
Dry air can be cooled and then fractionally distilled to separate its components. What is the minimum volume of dry air needed to prepare a 25 dm3 sample of oxygen…
Dry air can be cooled and then fractionally distilled to separate its components. What is the minimum volume of dry air needed to prepare a 25 dm3 sample of oxygen…
Propene is an alkene. The structural formula of propene is shown. A polymer can be made from propene. What is the correct structural formula of this polymer? Answer: 18) D…
The concentration of Fe2+ ions in a solution can be determined by titration with acidifed potassium manganate(VII) solution.The ionic equation for the reaction is:5Fe2+ + MnO4– + 8H+ → 5Fe3+…
Which of the following shows the correct structure of part of the polymer formed by thepolymerisation of CH3 – CH = CH – CH3 ? Answer: 18) E The double…
Propanoic acid is a monoprotic acid. Magnesium is a Group 2 metal. Which of the following chemical equations is correct for the reaction between magnesium carbonate and propanoic acid? Answer:…
What volume of a 0.10 mol dm–3 solution of NaOH is needed to neutralise 30 cm3 of a 0.20 mol dm–3 aqueous solution of a diprotic acid? Answer: 18) C…
The reaction between the gases S and T occurs according to the following equation. Which statement about this reaction is correct? Answer: 18) C A – a catalyst would increase…
An organic compound is found to contain 6 parts of carbon, 1 part of hydrogen and 8 parts ofoxygen by mass.6 g of a gaseous sample of the compound would…
18 An impure sample of sodium hydroxide has a mass of 1.20 g. All the sodium hydroxide completely reacts with a minimum of 50.0 cm3 of 0.50 mol dm-3 hydrochloric…
Vanadium is a metal that lies just above zinc in the reactivity series. Which one of the following could not be used to obtain the metal from its ore? Answer:…