EXOTHERMIC change<span> from the gaseous to the liquid </span>state<span> of matter.
</span>
Answer:
False
Explanation:
2CH₄ + 2O₂ ⟶ 2CO₂ + 2H₂O
Let’s count the atoms on each side of the reaction arrow.
<u>Atom</u> <u>On the left</u> <u>On the right</u>
C 2 2
H 8 4
O 4 6
C is balanced, but there are different numbers of H and O on each side.
The equation is not balanced
.
Explanation:
It is known that relation between
,
, and pH is as follows.
![E_{cell} = E^{o}_{cell} - (\frac{0.0591}{n}) \times log[H^{+}] ](https://tex.z-dn.net/?f=E_%7Bcell%7D%20%3D%20E%5E%7Bo%7D_%7Bcell%7D%20-%20%28%5Cfrac%7B0.0591%7D%7Bn%7D%29%20%5Ctimes%20log%5BH%5E%7B%2B%7D%5D%0A)
Also, it is known that
for hydrogen is equal to zero.
Hence, substituting the given values into the above equation as follows.
![E_{cell} = E^{o}_{cell} - (\frac{0.0591}{n}) \times log[H^{+}] ](https://tex.z-dn.net/?f=E_%7Bcell%7D%20%3D%20E%5E%7Bo%7D_%7Bcell%7D%20-%20%28%5Cfrac%7B0.0591%7D%7Bn%7D%29%20%5Ctimes%20log%5BH%5E%7B%2B%7D%5D%0A)
0.238 V = 0 - (\frac{0.0591}{1}) \times log[H^{+}]
[/tex]
= 4.03
= antilog 4.03
= 3.5
As, pH =
.
Thus, we can conclude that pH of the given unknown solution at 298 K is 3.5.
D. A town has started a new recycling and composting program