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Give an advantage of hard water.
Hard water tastes better.
Answered by Angus B. •
Chemistry tutor
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Zinc reacts with sulphuric acid (Zn + H2SO4 --> ZnSO4 + H2). Write out two separate equations for the species that are oxidised and reduced.
An atom of iron is represented as 26Fe 56 Give the number of protons, neutrons and electrons in this atom of iron.
Chlorine reacts with potassium bromide to form potassium chloride and bromine. In this reaction chlorine forms chloride ions: Cl2 + 2KBr --> 2KCl + Br2. Explain, using the equation, how you know that chlorine has been reduced.
What is oxidation and reduction?
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