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If this is the outcome of a (too) simplified calculation formula for pH of hydroxide solutions, then here is the 'missing' part to correct this 'false' answer (or outcome):
pH = 14.0 - pOH = 14.0 - [-log(OH-)] (this is generally valid at room temperature 25oC)
- simplified: pH = 14.0 - [-log(OH-)] = 14.0 + log(NaOH) = 14-[log(10-8)]= 6
- almost (but sufficiently) correct: .... = 14.0 + log[(NaOH) + (1.0*10-7)]
so by adding the amount of OH- ions, already present in pure water. This can NOT longer be ignored when NaOH concentration is very diluted, below 10-6 mol/L.
So when pHoutcome < 8 for dilute bases it should be 'recalculated' by addition of 10-7 before taking any log !
(The same is analogously valid for dilute acids when pHoutcome > 6)
pHoutcome = 6 for this NaOH concentration (which appears to have been (NaOH) = 1.0*10-8) is lower than 8 so is to be corrected as follows:
pH = 14.0 + log[(NaOH) + (1.0*10-7)] = 14 + log[1.0*10-8 + 1.0*10-7] =
= 14 + log[1.1*10-7] = 14 - 6.96 = 7.04 = 7.0
(and not 6 as in the simplified formula outcome)
What else can I help you with?
What is the pH of a 1.0 10 -6 M NaOH solution?
The pH of a 1.0 x 10^-6 M NaOH solution is approximately 11.00. This is because NaOH is a strong base that dissociates completely in solution to produce hydroxide ions, resulting in a high pH.
What is 6N NAOH?
6N NaOH refers to a solution of sodium hydroxide (NaOH) that has a concentration of 6 normal (6N) strength. This means that the solution contains a high concentration of NaOH, which is a strong base commonly used in laboratory settings for various chemical reactions.
What is molarity poh and pH of 4.50G of NaOH if diluted in up to 750 ml of H2O?
MW NaOH is 23+16+1 = 40. 4.5g in 750ml is 6.0g in 1L. Molarity is 6/40 = 0.15 OH- concentration is 0.15, pOH is -log100.15 = 0.82 H+ concentration is 10-14/0.15 = 6.67x10-13 pH is -log10 6.67x10-13 = 12.18
Is a pH of 11.5 acidic basic or neutral?
yes. 1-6 is acid 7 is neutral and 8-14 is base so 11 is base.
A substance with pH of 6 is called what?
Anything with a pH less than 7 is an acid. Anything with a pH greater than 7 is a base. pH = 7 is neutral
What is the pH of a 1.0 10 -6 M NaOH solution?
The pH of a 1.0 x 10^-6 M NaOH solution is approximately 11.00. This is because NaOH is a strong base that dissociates completely in solution to produce hydroxide ions, resulting in a high pH.
What is 6N NAOH?
6N NaOH refers to a solution of sodium hydroxide (NaOH) that has a concentration of 6 normal (6N) strength. This means that the solution contains a high concentration of NaOH, which is a strong base commonly used in laboratory settings for various chemical reactions.
What values on the pH scale indicate a base?
Bases have a pH > 7.0 BUT this merely describes the concentration of ions. Strong usually describes if all the substance ionizes, not how many ions are present. EX. NaOH is a strong base, but the pH of a solution of NaOH can be anywhere from 7.1 to 14 depending on how much has been dissolved.
What is a base on the pH scale?
A base is anywhere from 8 to 14 on the Ph scale. If a base of about 8 is added to and acid of about 6, the Ph will be balanced out.
What is molarity poh and pH of 4.50G of NaOH if diluted in up to 750 ml of H2O?
MW NaOH is 23+16+1 = 40. 4.5g in 750ml is 6.0g in 1L. Molarity is 6/40 = 0.15 OH- concentration is 0.15, pOH is -log100.15 = 0.82 H+ concentration is 10-14/0.15 = 6.67x10-13 pH is -log10 6.67x10-13 = 12.18
What is the pH for base?
An acid is 0-6 on the pH scale. Neutral is around a 7. Around 8 and above is the pH for a base.
A 20.0ml sample of 0.800 m Hbr solution is titrated with 0.800 m NaOH solution calculate the pH of the solution after these volumes of base are added 12.5 ml 18.7 ml 20.0 ml 29.5 ml and 34.2?
To calculate the pH after each volume of NaOH is added, you need to determine the moles of HBr initially, moles of NaOH added, and then use these values to calculate the final concentration of H3O+ ions in the solution. From there, you can calculate the pH using the equation pH = -log[H3O+]. Repeat these calculations for each volume of NaOH added to find the pH at 12.5 ml, 18.7 ml, 20.0 ml, 29.5 ml, and 34.2 ml.
Is a pH of 11.5 acidic basic or neutral?
yes. 1-6 is acid 7 is neutral and 8-14 is base so 11 is base.
A substance with pH of 6 is called what?
Anything with a pH less than 7 is an acid. Anything with a pH greater than 7 is a base. pH = 7 is neutral
How to prepare 6N NaOH?
To prepare a 6N NaOH solution, you would need to dissolve 240 grams of sodium hydroxide (NaOH) pellets in enough distilled water to make 1 liter of solution. This will result in a 6N (Normal) solution of NaOH. Remember to handle NaOH with caution as it is a strong base and can cause burns.
Is coffee an extremely basic?
Coffee is a mild base around 6 pH (water has a pH of 7).
Is a solution with a pH 6 an acid or a base?
A solution with a pH of 6 is considered acidic. pH values below 7 indicate acidity, while pH values above 7 indicate alkalinity.
