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Estimate $\Delta H_{f}^{\circ}$ for sodium astatide (NaAt) according to the equation $$\mathrm{Na}(s)+\frac{1}{2} \mathrm{At}_{2}(s) \longrightarrow \mathrm{NaAt}(s)$$ The information in Problem 8.147 may be useful.
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Chemistry 101
Chapter 9
Chemical Bonding I: Basic Concepts
Chemical Bonding
Carleton College
Rice University
University of Maryland - University College
Lectures
04:16
In chemistry, a chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between opposite charges, dipole–dipole attraction (see also polarization (chemistry)), or the sharing of electrons as in covalent bonding. The strength of chemical bonds between atoms ranges from the weakest to the strongest. Many types of bond exist between atoms, such as single, double, and triple bonds; and bonds of particular strength, including ionic and covalent bonds. A chemical bond is an attraction between atoms. This attraction may be seen as the result of different behaviors of the outermost or valence electrons of atoms. These behaviors merge into each other seamlessly in various circumstances, so that there is no clear line to be drawn between them. In general, strong or polar bonds are the result of the electron cloud of one atom being drawn towards the electron cloud of another atom, such that the negative or positive charge of the electron clouds increases. A bond is an attraction between atoms. This attraction may be seen as the result of different behaviors of the outermost or valence electrons of atoms. These behaviors merge into each other seamlessly in various circumstances, so that there is no clear line to be drawn between them. In general, strong or polar bonds are the result of the electron cloud of one atom being drawn towards the electron cloud of another atom, such that the negative or positive charge of the electron clouds increases
09:12
In chemistry, the octet rule is a rule that states that all atoms prefer to have eight electrons in their valence shell (outermost electron shell). A stable atom will have eight electrons in its valence shell, and will tend to gain, lose, or share electrons in order to achieve this configuration. The octet rule is an empirical observation rather than a fundamental principle, and hence its applicability is limited to the realm of valence electrons. The rule was proposed by the English chemist John Alexander Reina Newlands in 1875 and was named the "octet rule" by Gilbert N. Lewis in 1918.
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Sodium reacts violently wi…
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03:53
From the data given in Exe…
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Oxygen can be made in the …
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00:50
Use the following data to …
04:32
Use the information in Pro…
the reaction of sodium with batteries and eggs. A thermic reaction sodium reacts violently with water. Does the L. R. H degrees should be negative. They increase the number of most of gasses of the reaction. sodium vortices, gas is formed. Does the L. R. S. Degree should be positive happening left is the value of standard entropy isn't in therapies from the reaction. Even in the question there are H degree and the L. R. S. Degree. After substituting the values of entropy and entropy. These are minus 1 83.32 kg per month and minus 7.7 Julia came on the reaction sodium with batteries. XZ. Atomic reaction sodium reacts violently with water does there are eight degrees should be negative. There is an increased number of most of gaseous reaction was sort of sodium. And what is that Since the gas is formed this DLRS did we should be positive. The calculated value of delta H degree, S. Degree and H degree are the minus 183.32 and -7.7 with the units respectively. And the calculated value of dlr H degree and S degree is negative. Which proves that the reaction is exactly for me and for the less degree that is negatives as should be positive because of increased number of most of gasses negative in tropic can be attributed to the fact that there is a hydrogen morning and solution conclusion is the science for dlRS degree and H degree with respect to the reaction of sodium with water was predicted without using calculations and this is the answer for the given question.
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