In: Chemistry
Question 3
1) What is the H+ concentration for an aqueous solution with pOH = 4.09 at 25 ∘C? Express your answer to two significant figures and include the appropriate units.
2)
Arrange the following aqueous solutions, all at 25 ∘C, in order of decreasing acidity.
Rank from most acidic to most basic. To rank items as equivalent, overlap them.
Ph=5.45 POH=8.55 .0018MKOH .0023 M HCL
3)
At a certain temperature, the pH of a neutral solution is 7.33. What is the value of Kw at that temperature?
Express your answer numerically using two significant figures.
1. pH = 14 - pOH
pH = 14- 4.09
pH = 9.91
H+ concen = 10-pH
H+ = 1.230 X10-10
so in words:
pH is equal to 14 minus the pOH. this is because the pH scale is
out of 14.
next, the H+ concentration is equal to 10 raised to the negative
pH.
Just plug in these numbers into these formula .
2.