2. An aqueous HCI solution has the concentration of 0.037 M a) The Hy0\') of thi

Question

2. An aqueous HCI solution has the concentration of 0.037 M a) The Hy0') of this solution ia b) The concentraion of particles in this solution is c) What is the (OH'] of this solution? (1 pt, show your work) M and the (Cr) M (1 pt if both correet) osmoll e) What is the ph of this solution?(1 pt, show your work) 1: lowest 5, pt f ll corect 3. a) Rank the boliling points of the following molecules (highest E. D. O C. B. 0 A. Rank: b) Which of the above has the highest yapor pressure? (1 pt) o) Which of the above are hydrogen bonding donors? (1 pt f all corredt) d) Which of the above would be insoluble in water?(1 ptifall coret)

Explanation / Answer

Ans 2 :

Since HCl is a strong acid , it will completely dissociate in the solution into its ions.

So here :

a)

[H3O+] = 0.037 M

The [H3O+] of this solution is 0.037 M and the [Cl-] = 0.037 M

b)

Each mole of HCl has 2 mole of ions.

Total concentration of particles = 2 x 0.037 = 0.074 M

The concentration of the particles in this solution is 0.074 osmol/L

c)

[OH-] = (1.0 x 10-14) / [H3O+]

= (1.0 x 10-14) / (0.037)

= 2.7 x 10-13 M

e)

pH = -log [H3O+]

= -log (0.037)

= 1.43

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