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I'm not an expert teacher or lecturer of chemistry. I was only a student from SMA NEGERI 15 SURABAYA who had been one of the Bronze Medalist Participants of Olimpiade Sains Nasional X (2011) of Chemistry In Manado, North Sulawesi, 11 - 16 September 2011 and graduated in 2012. Now, I'm studying at Universitas Airlangga in Surabaya, Indonesia. I do love chemistry and I would like to help them who had difficulties in studying chemistry. That's why, please understand me if you found some misconcepts in my entries. Suggestions are always necessary in order to develop this blog. And I'm sorry because my English isn't so well.

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The Documents

Friday, December 23, 2011

Inorganic Chemistry Problems: Solid State Chemistry

1. Explain what is meant by:
~ A Schottky defect in Calcium Chloride
~ A Frenkel defect in Silver Bromide]

2. Why are d-block metal oxides much more frequently non-stoichiometric than are non-d-block metal oxides?

3. When Nickel(II) oxide is heated in Oxygen Gas, some of the cations are oxidized and vacant cation sites are formed according to the equation:


Where + denotes a vacant cation site and (s) denotes an ion in the solid. Account for the fact that the conductivity of the product is for small deviations from stoichiometry, proportional to the sixth root of the pressure of O2.

4. Suggest likely products in the following reactions:


5. The structure of YBa2Cu3O7 can be described as consisting of rock salt and perovskite layers. Describe the origin of this description.

Source and Further Reading:
Catherine E. Housecroft. Inorganic Chemistry Second Edition.


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