Skip to main content
P

The Kw for water at 0 °C is 0.12× 10–14. Calculate the pH of a neutral aqueous solution at 0 °C.?

The Kw for water at 0°C is 0.12× 10^–14. Calculate the pH of a neutral aqueous solution at 0°C.Is a pH = 7.25 solution acidic, basic, or neutral at 0 °C?
0
Save

4 Answers

M
Major Spinka DVM

Feb 20, 2025

Kw = [H3O+][OH-] = 0.12 x 10^-14; since [H3O+] = [OH-] = x, then x^2 = 0.12 x 10^-14, andx = 3.5 x 10^-8 M = [H3O+]pH = -log [H3O+] = -log (3.5 x 10^-8) = 7.46So a solution of pH = 7.25 at 0 C has a lower pH than neutral (7.46); it is acidic.... Show More
0
M
Major Spinka DVM

Feb 20, 2025

The ionization of water is described by the equation H20(l) = (H+)(aq) + OH-(aq) The equilibrium constant expression is kw=[H+][OH-] = 2.4 x 10^-14 in pure water, [H+]=[OH-] so, kw= [H+]^2 take the square of both sides to find the concentration of H+ 2.4X10^-14=[H+]^2 [H+]=1.55 x 10^-7 M pH = -log[H+] pH = -log[1.55 X 10^-7] = 6.8 A solution with a pH of 7.00 is basic at 37 °C because the pH of the solution is greater than 6.81.... Show More
0
M
Major Spinka DVM

Feb 20, 2025

Calculate [H+] [H+] = √(0.12*10^-14) [H+] = 3.46*10^-8pH = -log (3.46*10^-8)pH = 7.46The pH of neutral pure water at 0°C = 7.45 If the pH of the solution is tested and found to be 7.25 at 0°C – then the water is slightly acidic.... Show More
0

Want to answer this question?

Join our community to share your knowledge!

Log in Sign up

Categories

Tags

Related Questions

4
The lateral area of a cone is 612 pi cm2 The radius is 14.2 cm. What is the slant height to the

The lateral area of a cone is 612 pi cm2 The radius is 14.2 cm. What is the slant height to the

2
The law of constant composition applies to __________.?

A. solutions B. heterogeneous mixtures C. compounds D. homogeneous mixtures E. solidsThanks

4
4
The least desirable method of restraint for a cat is

The least desirable method of restraint for a cat is a. holding the cat with your bare hands. b. holding the cat while w...

4
3
the line that is normal to the curve x^2 + 2xy – 3y^2 = 0 at (1,1) intersects the curve at what other point?

i found the derivative to be dy/dx = - (2x + 2y)/(2x - 6y)then i found the slope at that point to be equal to 1, which m...

3
The lower atmosphere and hydrosphere are bound to the earth by?

Whatthe lower atmosphere and hydrosphere are bound to the earth by (1) magnetic fields(2) atmospheric pressure(3) the fo...

2
The lowest note on a piano is A, four octaves below the A.?

The highest note on a piano is C, four octaves above the middle C. Find the frequencies and wavelengths (in air) of thes...

1
The lungs, kidneys and perspiration account for about____% of the elimination of alcohol. ?

a) 40 b) 30 c) 20 d) 10 please. it’s for a drug and alcohol class.

5