Compound C\mathbf{C}C is a hydrated ionic compound with the empirical formula: MgH12N2O12\text{MgH}_{12}\text{N}_2\text{O}_{12}MgH12N2O12.
A student investigates the thermal decomposition of compound C\mathbf{C}C as outlined below.
The student gently heats 0.00500 mol0.00500\text{ mol}0.00500 mol of compound C\mathbf{C}C to remove the water of crystallisation. 0.540 g0.540\text{ g}0.540 g of water is collected, leaving 0.00500 mol0.00500\text{ mol}0.00500 mol of the anhydrous compound D\mathbf{D}D.
The student strongly heats 0.00500 mol0.00500\text{ mol}0.00500 mol of compound D\mathbf{D}D, which decomposes to form a solid oxide E\mathbf{E}E (molar mass of 40.3 g mol−140.3\text{ g mol}^{-1}40.3 g mol−1) and 300 cm3300\text{ cm}^3300 cm3 of a gas mixture, measured at RTP, containing gases F\mathbf{F}F and G\mathbf{G}G.
The student cools the 300 cm3300\text{ cm}^3300 cm3 gas mixture of F\mathbf{F}F and G\mathbf{G}G.
Determine the formulae of C\mathbf{C}C, D\mathbf{D}D, E\mathbf{E}E, F\mathbf{F}F and G\mathbf{G}G.
Show all your working and equations for the reactions.
