Chemistry · BGCSE / Formulae, equations and moles
StructuredPast exam questionForm 5 · BGCSE
Answer the following.
- aThe carbon dioxide gas produced is reacted with aqueous sodium hydroxide. Write a balanced equation for this reaction. [2]
- bMethyl benzoate is an ester with the structure shown (C₆H₅COOCH₃). What is the empirical formula of this compound? [1]
You'll mark your own answer against the marking guide when you hand it in.
Source: BEC BGCSE Chemistry 2013, Paper 3, Question 2(c)
Report a problem
More like this
- How many moles are in 36 g of water? (H = 1, O = 16)
- What volume does 1 mole of any gas occupy at room temperature and pressure?
- What is the concentration of 0.5 mol of NaOH dissolved in 250 cm³ of solution?
- Calcium carbonate decomposes when heated: CaCO₃ → CaO + CO₂. (Ca = 40, C = 12, O = 16)
- A 10 g sample of impure iron(II) sulphate, FeSO₄, was dissolved in water to make 250 cm³ of solution. Exactly 25.0 cm³ of the solution was titrated w…
- The equation for the production of ethanol by the addition of steam to ethene is shown (CH₂=CH₂ + H–O–H → CH₃CH₂OH). Bond energies (kJ/mol): C–H 412;…
- Petrol is a mixture of hydrocarbons. C₅H₁₂ is one of the hydrocarbons in petrol. It burns in oxygen: C₅H₁₂ + 8O₂ → 5CO₂ + 6H₂O. The table shows bond …
- Waste water from a cotton manufacturing company contains a mixture of sulphuric acid, iron(II) sulphate and calcium oxide. A 10.0 cm³ sample of waste…