Using the data, which of the following is the rate constant for the rearrangement of methyl isonitrile at 320 ∘C? (HINT: the act
ivation energy for this reaction is 160 kJ/mol) T(K) 1/T(K−1) ln k 462.9 2.160×10−3 -10.589 472.1 2.118×10−3 -9.855 503.5 1.986×10−3 -7.370 524.4 1.907×10−3 -5.757 Using the data, which of the following is the rate constant for the rearrangement of methyl isonitrile at 320 ? (HINT: the activation energy for this reaction is 160 ) ln 462.9 -10.589 472.1 -9.855 503.5 -7.370 524.4 -5.757 8.1×10−15 s−1 2.2×10−13 s−1 2.7×10−9 s−1 2.0×10−1 s−1 9.2×103 s−1
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Answer: One formula unit of NaCl consists of one cation, whose chemical symbol is and one anion whose chemical symbol is
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
The cation is formed by the metal sodium which forms and the anion is formed by non metal chlorine which forms
.
For a formula unit of sodium chloride, the charges have to be balanced , thus the valencies of ions are exchanged and the neutral compound result. Thus
and
combine to form neutral