Answer:
8.73
Explanation:
The concentration of acetic acid can be determined as follows:
Moles of =
=0.0090 moles
Moles of
= 0.0090 moles
The equation for the reaction can be expressed as :
----->
Concentration of ion =
=
= 0.052 M
Hydrolysis of ion:
----->
⇒
=
As K is so less, then x appears to be a very infinitesimal small number
0.052-x ≅ x
pH = 14 - pOH
pH = 14 - 5.27
pH = 8.73
Hence, the pH of the titration mixture = 8.73
Answer:
carbon dioxide gas
Explanation:
Leavening may be achieved by the process of fermentation, which releases carbon dioxide gas. Bakers' yeast, composed of living cells of the yeast strain Saccharomyces cerevisiae, is available as a pressed cake and in a powdered form.
Answer:
a. 5.9 × 10⁻³ M/s
b. 0.012 M/s
Explanation:
Let's consider the following reaction.
2 N₂O(g) → 2 N₂(g) + O₂(g)
a.
Time (t): 12.0 s
Δn(O₂): 1.7 × 10⁻² mol
Volume (V): 0.240 L
We can find the average rate of the reaction over this time interval using the following expression.
r = Δn(O₂) / V × t
r = 1.7 × 10⁻² mol / 0.240 L × 12.0 s
r = 5.9 × 10⁻³ M/s
b. The molar ratio of N₂O to O₂ is 2:1. The rate of change of N₂O is:
5.9 × 10⁻³ mol O₂/L.s × (2 mol N₂O/1 mol O₂) = 0.012 M/s
Answer:
A
Explanation:c C B D are just wrong hope this helps god bless
My teacher just explained this problem to me and she said it is "the same".