This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Here are the solutions to the problems. Question 4: A solution of 25.0 cm³ of iron(II) ammonium sulphate needed exactly 20.0 cm³ of a solution of potassium dichromate(VI) of concentration 0.05 M. (a) State the colour of the solution at the end point. (b) Given the equation: 6Fe^2+(aq) + Cr_2O_7^2-(aq) + 14H^+(aq) 6Fe^3+(aq) + 2Cr^3+(aq) + 7H_2