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pH = -log[H+] = -log(0.0005) = 3.3
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What is the pH of a 0.5 M HF solution?
-log(0.5 M HF) = 0.3 pH
What determine the strength of acid?
For normal acids, pH is most accurate. For hydrofluoric acid, pH is NOT a good indicator--a 1-percent HF solution has a lower pH than a 50-percent solution does, and a 10-percent HF solution has the highest pH of all. The range is from 3.1 (for a 1-percent solution) to 4.5 (for a 10-percent solution). HF is considered a weak acid--not all the HF molecules dissociate when the HF gas is put into water--but it's the most corrosive acid around.
What is the effect of adding NaF to a aqueous HF solution-a pH increases b h30 increases c hf increases?
the pH increases
At a certain temperature a 0.25 M solution of HF has a pH of 2.3 What is the Ka of HF at this temperature?
apexvs answer 1.0 x 10-4
Can an acid increase the pH level of a solution?
No, the lower the PH level in the solution, under 7 (which is the neutral number) until 0, the higher the acid level. The higher the PH level in the solution is, over seven and until 14, the higher the base level.
What is the pH of a 0.5 M HF solution?
-log(0.5 M HF) = 0.3 pH
What determine the strength of acid?
For normal acids, pH is most accurate. For hydrofluoric acid, pH is NOT a good indicator--a 1-percent HF solution has a lower pH than a 50-percent solution does, and a 10-percent HF solution has the highest pH of all. The range is from 3.1 (for a 1-percent solution) to 4.5 (for a 10-percent solution). HF is considered a weak acid--not all the HF molecules dissociate when the HF gas is put into water--but it's the most corrosive acid around.
What is the effect of adding NaF to a aqueous HF solution-a pH increases b h30 increases c hf increases?
the pH increases
How many moles of HF Ka6.8104 must be present in 0.220dm3 to form a solution with a pH of 2.60?
An 0.010 M HF solution gives pH = 2.6, so 0.0022 molesare present in 0.22 L
At a certain temperature a 0.25 M solution of HF has a pH of 2.3 What is the Ka of HF at this temperature?
apexvs answer 1.0 x 10-4
Can an acid increase the pH level of a solution?
No, the lower the PH level in the solution, under 7 (which is the neutral number) until 0, the higher the acid level. The higher the PH level in the solution is, over seven and until 14, the higher the base level.
What has a pH level of 11?
A pH=11 is a pH of a basic solution; for example a solution of sodium hydroxide in water.
What quantity can tell you weather a solution is acid or base?
pH level Check the pH level of the solution with a piece of litmus paper.
A solution of HF has a pH of 5.5 What is the pOH of this solution?
pH + pOH = 145.3 + pOH = 14pOH = 14 - 5.3pOH = 8.7
At equilibrium a solution of hf has a pH of 4.1 if hf equals 1.4 x 10-4 and f equals 6.0 x 10-5 what is the value of ka for hf at this temperature?
apexvs answer 3.4 x 10-5
What is the pH level of ammonium sulfate?
pH of 0.1M solution is 5.5.
What is the pH level in HCI?
a 10% solution of HCI's pH is 2
