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ira [324]
3 years ago
5

The dipole moment (μ) of hbr (a polar covalent molecule) is 0.797d (debye), and its percent ionic character is 11.8 % . estimate

the bond length of the h−br bond in picometers.note that1 d=3.34×10−30 c⋅m andin a bond with 100% ionic character, q=1.6×10−19
c.
Chemistry
1 answer:
miv72 [106K]3 years ago
6 0
The dipole moment u can be solve using the formula
U = rq
Where u is the dipole moment
R is the bond length
Q = 1.6x10-19 C  
So R = u/q
R = (0.797 d) ( 3.34x10^-30 Cm/ 1 d) /( 1.6x10^-19 C)(0.118)
R = 1.41x10^-10 m
<span>R = 141 pm</span>
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Considering the definition of pOH and strong base, the pOH of the aqueous solution is 1.14

The pOH (or potential OH) is a measure of the basicity or alkalinity of a solution and indicates the concentration of ion hydroxide (OH-).

pOH is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:

pOH= - log [OH⁻]

On the other hand, a strong base is that base that in an aqueous solution completely dissociates between the cation and OH-.

LiOH is a strong base, so the concentration of the hydroxide will be equal to the concentration of OH-. This is:

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Replacing in the definition of pOH:

pOH= -log (0.073 M)

<u><em>pOH= 1.14 </em></u>

In summary, the pOH of the aqueous solution is 1.14

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Suppose a compound is involved in three different reactions denoted R1, R2, and R3. Tripling the concentration of this reactant
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The relationship between the rate of a chemical reaction and the concentration of its reactants is given by the rate law or equation.

Generally, the rate equation is given as;

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For the given reactions R1, R2 and R3

For R1; rate = 3, Concentration = 3[A]

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Since rate is proportional to concentration, therefore, the order of reaction, x = 0

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