Daily Practice

GCSE Science

17th March 1987

5 questions · GCSE · 584 questions in this band

1
Bond Energies, Cells and Fuel Cells
Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
2
Rate and Extent of Chemical Change
State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
3
Rates of Reaction
In the disappearing cross required practical, state the dependent variable that is measured.
4
Reversible Reactions and Equilibrium
In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
5
Organic Chemistry
Name the two industrial methods of cracking.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1987, including the monthly compilation PDF.