General Chemistry Question: What is the formula of petrol? General Chemistry Interview QuestionAnswer: CnH2n+2 Previous QuestionNext QuestionWhy all the concentration of chemical species are measured using water as solvent (for examole 1N NaOH means 40 g of NaOH in one litre of water)eventhough there are so many solvents available?How will you jug that the give organic compound is pure or not?