Chapter 8 Group 2 Corrections
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6 Terms
B
Idk?
B because it neutralises acidic soils
BaO (s) + H2O (l) → Ba(OH)2 (aq)
Ca reacts with water
Explain why these two reactions of magnesium produce the same volume of gas but at different rates. (3 marks)
HCL is a strong acid so it completely dissociates and CH3COOH is a weak acid so partially dissociates
Greater H+ concentration in HCL means more frequent collisions and a faster rate of reaction
Both of the acids are mono basic and have the same number of moles of acid
A student adds a few drops of dilute sulfuric acid to the colourless solution.
Describe what the student would observe and give the formula of the barium compound formed. (2 marks)
Observation
The formation of a white precipitate of BaSO4
Formula of barium compound
BaSO4
