The ratio of buffer C₂H₃O₂ /HC₂H₃O₂ must you use are1:0.199 or 10:2
the ratio of buffer C₂H₃O₂ /HC₂H₃O₂ can be calculate using the Henderson-Hasselbalch Equation which relates the pH to the measure of acidity pKa. The equation is given as:
pH = pKa + log ([base]/[acid]
Where,
[base] = concentration of C₂H₃O₂in molarity or moles
[acid] = concentration of HC₂H₃O₂ in molarity or moles
For the sake of easy calculation, allow us to assume that:
[base] =1
[acid] = x
Therefore using equation 1,
5.44 = 4.74 + log (1 / x)
log [base / acid] = 0.7
1 / x = 5.0118
x = 0.199
The required ratio of buffer C₂H₃O₂ /HC₂H₃O₂ is 1:0.199 or 10:2
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<span>Chlorofluorocarbons (CFCs) can damage the ozone layer.</span>
Answer : cis-2-pentene
Explanation : The stereoisomers are the compound which differs only in the spatial arrangement of the atoms across the stereogenic centers.
There are mainly two forms of stereoisomers cis and trans. Cis-isomers are those where the two bulky or functional groups are arranged on the same side across the stereogenic center; whereas, in trans-isomers the two bulky groups or functional groups are arranged in the opposite sides of stereogenic center.
Transition metals seem to have fairly even levels of reactivity though it seems they to react more with bases than acids. If I didn’t know from the lessons, I would say alkali and alkaline earth metals weren’t very reactive.
(That's my answer when I did a lab about the reaction of metals for chemistry at least.)
The atomic mass of titanium is 47.88 u.
The average atomic mass of Ti is the <em>weighted average</em> of the atomic masses of its isotopes.
We multiply the atomic mass of each isotope by a number representing its relative importance (i.e., its % abundance).
Thus,
0.0800 × 45.953 u = 3.676 u
0.0730 × 46.952 u = 3.427 u
0.7380 × 47.948 u = 35.386 u
0.0550 × 48.948 u = 2.692 u
0.0540 × 49.945 u =<u> 2.697 u
</u>
_________TOTAL = 47.88 u
