Answer:
C
Explanation:
CO2 is a molecule because it is compose of atoms which made it a molecule, it can also be call a compound.
Answer:
pH = 2.77
Explanation:
Data Given:
degree of dissociation Ka = 0.057
Concentration of Methanoic acid = 0.005 M
pH = ?
Solution:
First we calculate Hydrogen ion concentration
Formula will be used
[H⁺] = . . . . . . (1)
where
Ka = degree of dissociation
c = concentration
Put values in formula 1
[H⁺] = . . . . . . (1)
[H⁺] = 0.0017 M
Now Calculate the pH
As we know
pH = -log [H⁺] . . . . . .(2)
Put values in equation
pH = - log [ 0.0017 M]
pH = - [-2.77]
pH = 2.77
So,
pH of methanoic acid = 2.77
Answer:
Chloride (Cl⁻) and sodium (Na⁺) ions.
Explanation:
Hello,
In this case, since the aqueous species are actually dissociated when reacting and the solid species (ferric carbonate) remains undissolved, we can modify the given reaction as follows:
In such a way, dissociating the aqueous species we obtain:
It means that the net ionic equation is:
Therefore, the spectator ions are those were cancelled out, chloride (Cl⁻) and sodium (Na⁺).
Best regards.
We know that the pH of neutral solutions is 7, for acidic solutions is less than seven and for basic solutions is greater than 7.
pH = -log[H+]
pH = -log ( 1 x 10⁻⁴)
pH = 4
The answer is:
A) Acidic
Molar mass of H2SO4 = 2*1 + 1*32 + 4*16 = 98g
mass of 2 moles of H2SO4 = 98*2 = 196g