§-Quick questions
NSWChemistryModule 7: Organic Chemistry
Quick questions on Fractional distillation, cracking and biofuels explained: HSC Chemistry Module 7
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is biofuels as an alternative source?Show answer
Because petroleum is a finite, non-renewable resource, biofuels offer an alternative route to hydrocarbon-derived fuels using recently grown biomass instead of crude oil.
What is q1?Show answer
Explain why the petrol fraction condenses higher up a fractionating column than the diesel fraction. [3 marks]
What is q2?Show answer
Write a balanced equation for the thermal cracking of octane () into butane and two alkene fragments of your choosing, showing that both carbon and hydrogen balance. [3 marks]
What is q3?Show answer
A fermentation vat converts 900 g of glucose () completely to ethanol (). Calculate the theoretical mass of ethanol produced, to 3 significant figures. [4 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.