New name for a one night stand: van der waals
Because you hook up and leave
Does that make a relationship a permanent dipole?
Marriage is a covalent bond.
So is divorce a heterolytic or homolytic cleavage?
I guess it depends on whether one party takes everything or if it’s an even split.
The calculation is correct. I’ve gone through the calculations and gotten the same.
pH is dependent on concentration. I believe the reason the pH is low is because of how minute your concentration is.
But I think you have to consider the water the solution is in. Which would be at a pH of ~7. If you add the concentration of NaOH and what water would be at a pH of 7, the result is still near 7.
An example of this I found online here.
I hope this helps.
There are two chemical processes at play here: the dissociation of a strong base and the autoprotolysis of water. For solutions of strong acids and strong bases with concentrations greater than about 10^-5, the autoprotolysis of water has a negligible effect on pH. However, for dilute solutions of strong acids and strong bases, the amount of hydronium or hydroxide resulting from the autoprotolysis of water can be comparable to or greater than the amount contributed by the acid or base.
Consider the dissociation of NaOH first, since it’s so extremely favorable that it goes to completion regardless of any other simultaneous processes:
NaOH —> Na+ + OH-
This process contributes 4x10^-9 M OH-.
Then consider the autoprotolysis of water, which is a dynamic equilibrium quantified by the equilibrium constant Kw = [H3O+][OH-] = 1.0x10^-14, and construct an equilibrium chart (aka ICE table):
2 H2O <==> H3O+ + OH-
Initial: 0 M 4x10^-9 M
Change: +x +x
Equilibrium: x 4x10^-9 M + x
Then substitute the the equilibrium concentrations from the ICE table into the equilibrium expression:
Kw = [H3O+][OH-] = x(4x10^-9 + x) = 1.0x10^-14
Solve for x. (I’m not showing it here because it’s more math than chemistry, but basically you need to expand the polynomial and then use the quadratic formula, or a calculator if you prefer, like most of the kids do these days.) It turns out that x = [H3O+] = 9.8x10^-8.
Therefore, pH = -log[H3O+] = -log(9.8x10^-8) = 7.0
Essentially, the amount of hydroxide derived from the addition of NaOH to this water is negligible compared to the amount of hydroxide (or hydronium) that was already in the water due to autoprotolysis.
Nitric oxide didn’t listen to its chemistry teacher when told every atom in a stable molecule ought to have a full octet. NO didn’t blindly subscribe to the notion of doubly occupied HOMOs and vacant LUMOs. Instead, nitric oxide’s frontier orbital identifies as SOMO. It doesn’t conform to the established norms of diamagnetic chemistry that ascribe HOMO and LUMO labels to every molecule. NO is a proud, free-thinking, reactive species with unique properties and it’s not afraid to show off its extra anti-bonding electron to the world, even though some people consider it unusual or dangerous.