B. False. An alpha particle is a Helium nucleus which has a mass of 4 as it is made from 2 neutrons and protons each with mass of +1.
Answer: The concentration of hydrogen ion in the given solution is
.
Explanation:
pOH of a solution is the negative logarithm of concentration of hydroxide ions.
Hence, if
is
then its pOH value is calculated as follows.
![pOH = -log [OH^{-}]\\= -log (3.5 \times 10^{-5})\\= 4.45](https://tex.z-dn.net/?f=pOH%20%3D%20-log%20%5BOH%5E%7B-%7D%5D%5C%5C%3D%20-log%20%283.5%20%5Ctimes%2010%5E%7B-5%7D%29%5C%5C%3D%204.45)
Now, the relation between pH and pOH is as follows.
pH + pOH = 14
pH + 4.45 = 14
pH = 14 - 4.45
= 9.55
And, pH is the negative logarithm of concentration of hydrogen ions. Hence,
is calculated as follows.
![pH = -log [H^{+}]\\9.55 = -log [H^{+}]\\H^{+} = 2.81 \times 10^{-10}](https://tex.z-dn.net/?f=pH%20%3D%20-log%20%5BH%5E%7B%2B%7D%5D%5C%5C9.55%20%3D%20-log%20%5BH%5E%7B%2B%7D%5D%5C%5CH%5E%7B%2B%7D%20%3D%202.81%20%5Ctimes%2010%5E%7B-10%7D)
Thus, we can conclude that the concentration of hydrogen ion in the given solution is
.
Since K3 is greater than 1, the reaction is thermodynamically favorable.
Data;
- FeF2 is in an acidic solution
- K2 > 1 is thermodynamically favorable
- k3 > 1 is not thermodynamically favorable
- K1<1 is not thermodynamically favorable
<h3>Hess Law</h3>
This states that the heat change in a given chemical reaction is the same irrespective of the number of process in which the reaction is effected.
Using Hess Law;

substituting this using Gibbs law,

Since K3 is greater than 1, the reaction is thermodynamically favorable.
Learn more on Hess law here;
brainly.com/question/12895682
<h3>
Answer:</h3>
The higher the hydronium ion concentration of a solution, the <u>lower</u> its pH.
<h3>
Explanation:</h3>
- The pH is the measure of acidity or alkalinity of a substance.
- We calculate pH by using;
pH = -log[H+]
- The lower the pH of a solution the more acidic it is and the higher the pH the more basic or alkaline it is.
- From this relationship, the higher the hydronium ions concentration of a solution the lower the pH and the more acidic a solution is.
For example,
Solution A with a [H₃O+] of 0.003 M will have a pH of
pH = -log 0.003 M
= 2.52
While, a solution B with a [H₃O+] of 0.025 M will have a pH of
pH = -log 0.25 M
= 1.60
Therefore, the higher the concentration of hydronium ion of a solution the lower its pH is.