Answer:
5.0 38 84.0 749.7 528.0 729.0 738.9 739.0
When the reaction equation is:
HF ↔ H+ + F-
and when the Ka expression
= concentration of products/concentration of reactions
so, Ka = [H+][F-]/[HF]
when we assume:
[H+] = [F-] = X
and [HF] = 0.35 - X
So, by substitution:
6.8 x 10^-4 = X^2 / (0.35 - X) by solving for X
∴ X = 0.015 M
∴[H+] = X = 0.015
when PH = -㏒[H+]
∴PH = -㏒0.015
= 1.8
The pressure is a result of the motion of particles
Answer:
evaporation.
evaporation is the process by which water changes from liquid to a gas or vapor.
Answer:
0.1357 M
Explanation:
(a) The balanced reaction is shown below as:
![2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O](https://tex.z-dn.net/?f=2NaOH%2BH_2SO_4%5Crightarrow%20Na_2SO_4%2B2H_2O)
(b) Moles of
can be calculated as:
Or,
Given :
For
:
Molarity = 0.1450 M
Volume = 10.00 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 10×10⁻³ L
Thus, moles of
:
Moles of
= 0.00145 moles
From the reaction,
1 mole of
react with 2 moles of NaOH
0.00145 mole of
react with 2*0.00145 mole of NaOH
Moles of NaOH = 0.0029 moles
Volume = 21.37 mL = 21.37×10⁻³ L
Molarity = Moles / Volume = 0.0029 / 21.37×10⁻³ M = 0.1357 M