Consider the following reaction- 3Cl2 + 6NaOH ? NaClO3 + 5NaCl + 3H2O This reaction is_______________?
Correct answer: C. Disproportionation reaction
- A. Displacement reaction
- B. Double displacement reaction
- C. Disproportionation reaction
- D. Reduction reaction
Explanation
In 3Cl2 + 6NaOH → NaClO3 + 5NaCl + 3H2O, chlorine starts at oxidation state 0 and is simultaneously reduced to -1 in NaCl and oxidized to +5 in NaClO3. A reaction in which the same element undergoes both oxidation and reduction is a disproportionation reaction. Students may choose reduction because much of the chlorine forms chloride, but another portion is oxidized to chlorate.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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