The standard free energy of formation of cubic silicon carbide (SiC) is 62.8 kJ mol-1 . Determine the standard free energy change when 1.00 mol SiC reacts with oxygen to form SiO2 (s, quartz) and CO2(g). Is silicon carbide thermodynamically stable in the air at room conditions?

Q: Using thermodynamic data from the Thermodynamic Data table, calculate AG° at 25°C for the process 2…

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Q: (a) From the phase diagram for carbon dioxide, determine the state of co2 at 20 atm and 273 K. (b)…

A: Given Phase diagram of CO2.

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A: a) To determine another compound that has same structure: The compound that has similar crystal…

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A: The rutile structure for MnO2 can be given as follows:

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Q: The internal energy change when 1.0 mol CaCO3 in the form of calcite converts to aragonite is +0.21…

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A: Spontaneous reactions are those reactions in which energy decreases.

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Q: Consider the thermodynamic data below:   Compound ΔHf(kJ/mol) C3H8(g) −103.85 O2(g) 0 CO2(g)…

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Q: What are semi-conductors?

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Q: calculate the standard reaction free energy of the following chemical reaction:

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Q: Use the themodynamic data to estimate the boiling point of bromine, Brz.

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Q: Definition of cell electrically?

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Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.