Answer : The millimoles of acetate need to add to this solution will be, 18.2 mmol
Explanation :
For acetic acid, ![pK_a=4.74](https://tex.z-dn.net/?f=pK_a%3D4.74)
Moles of of acetic acid = 10 mmol
pH = 5.00
Using Henderson Hesselbach equation :
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%20%5Cfrac%7B%5BSalt%5D%7D%7B%5BAcid%5D%7D)
Now put all the given values in this expression, we get:
![5.00=4.74+\log (\frac{Salt}{10})](https://tex.z-dn.net/?f=5.00%3D4.74%2B%5Clog%20%28%5Cfrac%7BSalt%7D%7B10%7D%29)
![Salt=18.2mmol](https://tex.z-dn.net/?f=Salt%3D18.2mmol)
Thus, the millimoles of acetate need to add to this solution will be, 18.2 mmol
Answer:
Bad bacteria come from external influences such as food, environmental toxins and even the effects of stress on our bodies. Sometimes a disturbance in the force, or an imbalance in the homeostasis of our bodies, will turn a healthy gut microbe into a colony of very unfriendly bacteria inside our bodies.
Answer:
Explanation: A cubic centimetre (or cubic centimeter in US English) (SI unit symbol: cm3; non-SI abbreviations: cc and ccm) is a commonly used unit of volume that corresponds to the volume of a cube that measures 1 cm x 1 cm × 1 cm.
Answer:
B
Explanation:
The last 2 answers can immediately be cancelled out as they're not combustion of ethanol, combustion in this context is not a reversable reaction so cannot be referenced in this way.
The answer is determined to be B just by simply counting the numbers of each of the elements on the reactants (left) side and the products (right) side and ensuring they're the same
In A on the reactants side there is 2C 6H 3O and on the products side there is 1C 3O and 2H its not equal so it is not correct
In B on the reactants side there is 2C 6H 7O and on the products side there is 2C 6H 7O its equal so this answer is correct