The oxidation state for sulfur atom in the given H 2 S species has to be determined. Concept introduction: Oxidation number: The oxidation number of an element is zero. The oxidation number of a monoatomic ion equals its charge. The oxidation number is zero for the summation of the oxidation numbers complete atoms in a complete formula. The charge on the ion is equal to the summation of the oxidation numbers of complete atoms in poly atomic ion. The oxidation state of alkali metal ( Li, Na, K, Rb, Cs ) is + 1 , and alkaline earth metal is (Be, Mg, Ca, Sr, Ba) is + 2 . The oxidation state of hydrogen is + 1 (except in bonding with metals), the oxidation state of oxygen is − 2 .
The oxidation state for sulfur atom in the given H 2 S species has to be determined. Concept introduction: Oxidation number: The oxidation number of an element is zero. The oxidation number of a monoatomic ion equals its charge. The oxidation number is zero for the summation of the oxidation numbers complete atoms in a complete formula. The charge on the ion is equal to the summation of the oxidation numbers of complete atoms in poly atomic ion. The oxidation state of alkali metal ( Li, Na, K, Rb, Cs ) is + 1 , and alkaline earth metal is (Be, Mg, Ca, Sr, Ba) is + 2 . The oxidation state of hydrogen is + 1 (except in bonding with metals), the oxidation state of oxygen is − 2 .
Solution Summary: The author explains the oxidation state of sulfur atom in the given S_Text8 species.
The following 'H NMR spectrum was taken with a 750 MHz spectrometer:
1.0
0.5
0.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0 ' 2.0
1.0
0.0
(ppm)
What is the difference Av
in the frequency of RF
ac
Δν
ac
radiation absorbed by the a and c protons? (Note:
it's not equal to the difference in chemical shifts.)
Round your answer to 2 significant digits, and be
sure it has an appropriate unit symbol.
=
O
O a will shift left, c will shift right.
O a will shift right, c will shift left.
a and c will both shift left, with more space
between them.
Suppose a new spectrum is taken with a 500 MHz
spectrometer. What will be true about this new
spectrum?
O
a and c will both shift left, with less space
between them.
O
a and c will both shift right, with more space
between them.
O
a and c will both shift right, with less space
between them.
Which protons have the largest energy gap
between spin up and spin down states?
O None of the above.
○ a
Ob
Explanation
Check
C
Ar
B
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What mass of Na2CO3 must you add to 125g of water to prepare 0.200 m Na2CO3? Calculate mole fraction of Na2CO3, mass percent, and molarity of the resulting solution. MM (g/mol): Na2CO3 105.99; water 18.02. Final solution density is 1.04 g/mL.
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