Answer:
The net ionic equation is the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction. As a general rule, if you balance the molecular equation properly, the net ionic equation will end up being balanced by both mass and charge.
Explanation:
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In writing the formula for a salt the symbol of the cation is first then the anion is written second .
Answer:
869.93J/g°C
Explanation:
From the question given, we obtained the following:
M = 42.6g
T1 = 12°C
T2 = 46°C
ΔT = T2 — T1 = 46 — 12 = 34°C
C =?
Q = 1260 KJ = 1260000J
Q = MCΔT
C = Q / MΔT
C = 1260000 /(42.6 x 34)
C = 869.93J/g°C
Therefore, the specific heat capacity is 869.93J/g°C
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