AQA A-Level Chemistry Past Paper Questions.
Study online at https://quizlet.com/_65fvjg
1. The sample is bombard- Explain how the gaseous atoms of rubidium are ionized in a mass
ed with high energy elec- spectrometer(2)
trons and knocks out an
electron forming 1+ ru-
bidium ions through us-
ing an electron gun.
2. Rb(g)---Rb+(g)+e(-) Write an equation, including state symbols, to show the process that
occurs when the first ionization energy of rubidium is measured(1
3. 1) Shake the final solution Read the following instructions that describe how to make up a stan-
in the flask. dard solution of a solid in a volumetric flask.
2)Ensure the bottom of Answer the questions which follow.
the (liquid)meniscus is on "Take a clean 250cm3 volumetric flask. Use the balance provided and
the graduation mark. a clean, dry container, to weigh out the amount of solid required.
3)Wash the wet rod into Tip the solid into a clean, dry 250cm3 beaker and add about 100cm3
the flask. of distilled water.
Use a stirring rod to help the solid dissolve, carefully breaking up any
lumps of slid with the rod.
When the solid has dissolved, pour the solution into the flask using a
filter funnel.
Add water to the flask until the level rises to the graduation mark"
SUGGEST THREE FURTHER INSTRUCTIONS WHICH WOULD IMPROVE
THE OVERALL TECHNIQUE IN THIS ACCOUNT.(3)
4. Cu2(OH)2CO3+4HCL---2CuCl2+3H20+CO2
Compounds containing Cu2+, OH- and CO3(2-) ions are sometimes
described as basic copper carbonates
(a) Solid Cu(OH)2CO3 is added to an excess of dilute hydrochloric acid.
A solution of copper(2)chloride is formed, together with two other
products.
(i) Write an equation for the reaction.
1/3
Study online at https://quizlet.com/_65fvjg
1. The sample is bombard- Explain how the gaseous atoms of rubidium are ionized in a mass
ed with high energy elec- spectrometer(2)
trons and knocks out an
electron forming 1+ ru-
bidium ions through us-
ing an electron gun.
2. Rb(g)---Rb+(g)+e(-) Write an equation, including state symbols, to show the process that
occurs when the first ionization energy of rubidium is measured(1
3. 1) Shake the final solution Read the following instructions that describe how to make up a stan-
in the flask. dard solution of a solid in a volumetric flask.
2)Ensure the bottom of Answer the questions which follow.
the (liquid)meniscus is on "Take a clean 250cm3 volumetric flask. Use the balance provided and
the graduation mark. a clean, dry container, to weigh out the amount of solid required.
3)Wash the wet rod into Tip the solid into a clean, dry 250cm3 beaker and add about 100cm3
the flask. of distilled water.
Use a stirring rod to help the solid dissolve, carefully breaking up any
lumps of slid with the rod.
When the solid has dissolved, pour the solution into the flask using a
filter funnel.
Add water to the flask until the level rises to the graduation mark"
SUGGEST THREE FURTHER INSTRUCTIONS WHICH WOULD IMPROVE
THE OVERALL TECHNIQUE IN THIS ACCOUNT.(3)
4. Cu2(OH)2CO3+4HCL---2CuCl2+3H20+CO2
Compounds containing Cu2+, OH- and CO3(2-) ions are sometimes
described as basic copper carbonates
(a) Solid Cu(OH)2CO3 is added to an excess of dilute hydrochloric acid.
A solution of copper(2)chloride is formed, together with two other
products.
(i) Write an equation for the reaction.
1/3
