Atom economy (Edexcel GCSE Chemistry Combined Science): Quizzes

📚Quizzes
Atom economy
Sign up to keep practising.Create a free account to play more quizzes and track your progress.

Practise the questions

11 questions from this quiz

Show

What does atom economy measure in a chemical reaction?

How much reactant becomes useful product

What does a higher atom economy indicate about waste production?

Less waste is produced

What is the atom economy of the hydration of ethene reaction?

100%

Which formula calculates percentage atom economy?

Mr of Desired ProductMr of All Products×100\frac{Mr \text{ of Desired Product}}{Mr \text{ of All Products}} \times 100

In fermentation of glucose, if ethanol Mr=92Mr = 92 and total product Mr=180Mr = 180, what is atom economy?

51%

What is theoretical mass?

Max product from reactants, assuming perfect

What is the first step in calculating theoretical mass?

Use the balanced chemical equation

In 2H2+O22H2O2H_2 + O_2 \rightarrow 2H_2O, how many moles of H2H_2 are in 8g? (MrMr of H2=2H_2 = 2)

4 moles

If 4 moles of H2H_2 react in 2H2+O22H2O2H_2 + O_2 \rightarrow 2H_2O, how many moles of H2OH_2O form?

4 moles

What is the MrMr of water (H2OH_2O)? (H = 1, O = 16)

18

If 4 moles of H2OH_2O form with Mr=18Mr = 18, what is the theoretical mass?

72 g

Explore Edexcel GCSE Chemistry Combined Science Revision Notes by Topics

Explore Edexcel GCSE Chemistry Combined Science Model Answers by Topics

Explore Edexcel GCSE Chemistry Combined Science Flashcards by Topics

Explore Edexcel GCSE Chemistry Combined Science Exam Questions by Topics

Join 100,000+ GCSE students studying Quizzes with us.

Select your subjects, and get access to A+ resources today.