The yield of a reaction is defined as the percentage of the product obtained compared to the theoretical maximum predicted yield calculated from the balanced equation. Formula mass of sulfate SO 4 is 32 4 x 16 96 therefore sulfate by mass 100 x 96132 727 SO 4 Note. Mr Jeffery going through some non-calculator examples of finding an original amount when given an amount that has had a percentage taken from or added to it.
Another method is to find 10 or 1 and then building the desired percentage up.
Whether its for your GCSE maths or 11-plus and grammar school entrance exams this video will show you how you can easily work out percentages. The percentage yield shows how much product is obtained compared to the maximum possible mass. Another method is to find 10 or 1 and then building the desired percentage up. We need to get closer to 35.