pH s calculated as the negative log10 of the hydrogen ion concentration. So log10 of 0.000724 = -3.14 so pH= 3.14
- log(0.00097)
= 3 pH
------------
p = -log[H+] = 12.4
13.7 take the negative logarithm
When a pH level is 7.0, it is defined as 'neutral' at 25°C because at this pH the concentration of H3O+ equals the concentration of OH− in pure water. - Wikipedia
If an aqueous solution has a pOH value of 10.7 and is at standard temperature and pressure, the pH value is 14 - 10.7 = 3.3. From the definition of pH, this means that the logarithm (to base 10) of the molar concentration of H+, [H+] is -3.3. This can be written as +0.7 - 4. The antilog of 0.7 is 5, to the justified number of significant digits. Therefore, [H+] = 5 X 10-4.
When the dissolving rate equals the rate at which molecules comes out of solution the solution is in 'equilibrium'.
p = -log[H+] = 12.4
13.7 take the negative logarithm
isotonic solution
Yes, if both solutions are at 25oC then in both solutions this is valid: pH + pOH = 14.0
1/1011.27 = 5.370 x 10 -12 ============
This would depend on the concentration of the solution, assuming that the powder is soluble.
No, they don't react with each other in aqueous solution and on heating nitrate becomes decomposed.
pH = 14 is basic pH = 7 is neutral pH - 1 and 2 are acidic; pH = 1 is more acidic than pH = 2 Therefore a solution at pH 1 has higher concentration of H+ than at pH 14
Molarity = Mols of solute / L of solution total
When a pH level is 7.0, it is defined as 'neutral' at 25°C because at this pH the concentration of H3O+ equals the concentration of OH− in pure water. - Wikipedia
- log(2.3 X 10 -12 ) = 11.6 pH -----------------very little H + concentration in this solution.
If an aqueous solution has a pOH value of 10.7 and is at standard temperature and pressure, the pH value is 14 - 10.7 = 3.3. From the definition of pH, this means that the logarithm (to base 10) of the molar concentration of H+, [H+] is -3.3. This can be written as +0.7 - 4. The antilog of 0.7 is 5, to the justified number of significant digits. Therefore, [H+] = 5 X 10-4.