Search and browse 1000’s of questions from past papers and view answers.
What is the product of the reaction of hydrogen chloride and ethene?
(2017)
Some of the blue pigment azurite used by an artist in a picture painted in 1600 has changed over the years into green malachite according to the following balanced equation.
Oxygen (O2) and nitrogen (N2) are separated industrially by the fractional distillation of liquefied air in a column like that shown.
Draw structures to show the differences that occur in the bonding in three ethene molecules when they undergo addition polymerisation and become part of a poly(ethene) chain.
The total hardness in a water supply was estimated by titrating 50.0 cm3 samples of the water with a standard solution of edta (ethylenediaminetetraacetic acid).
(2018)
