Solution check for pH of Strong Acid and Strong Base

In summary, a strong acid is a chemical compound that completely dissociates into ions when dissolved in water, while a strong base completely dissociates into hydroxide ions (OH-) when dissolved in water. To calculate the pH of a strong acid, you can use the formula pH = -log[H+], and for a strong base, the formula pH = 14 + log[OH-]. The pH range for strong acids is 0-3, while the pH range for strong bases is 11-14. To perform a solution check for pH, you can use a pH meter, pH test strips, or a pH indicator solution. Strong acids and strong bases can neutralize each other, resulting in a pH of 7,
  • #1
pavadrin
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0

Homework Statement


Calculate the pH after 24 mL of 1.00 M NaOH is added from the burette to a beaker containing 25.0 mL of 1.00 M HCl


Homework Equations


pH = -log [H+]
1*10^-14 = [H+][OH-]


The Attempt at a Solution



combined volume = 49mL

n.unreacted(H+) = 0.025-0.024 = 0.001 mol

[H+] = n/V = 0.001/0.049 = 0.02 mol L-1

pH = -log[H+] = 1.69 (2 d.p)



is that correct?

many thanks,
pavadrin
 
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  • #2
Yes.
 
  • #3
okay thank you for the reply
 

1) What is a strong acid and strong base?

A strong acid is a chemical compound that completely dissociates into ions when dissolved in water. A strong base is a chemical compound that completely dissociates into hydroxide ions (OH-) when dissolved in water.

2) How do you calculate the pH of a strong acid and strong base solution?

The pH of a strong acid solution can be calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions. The pH of a strong base solution can be calculated using the formula pH = 14 + log[OH-], where [OH-] is the concentration of hydroxide ions.

3) What is the pH range for a strong acid and strong base?

The pH range for a strong acid is 0-3, while the pH range for a strong base is 11-14. This means that strong acids have a higher concentration of hydrogen ions, making them more acidic, while strong bases have a higher concentration of hydroxide ions, making them more basic.

4) How do you perform a solution check for pH of strong acid and strong base?

To perform a solution check for pH of a strong acid and strong base, you will need a pH meter or pH test strips. Simply dip the meter or strip into the solution and record the pH reading. Alternatively, you can also use a pH indicator solution and compare the color change to a pH color chart.

5) Can a strong acid and strong base neutralize each other?

Yes, a strong acid and strong base can neutralize each other, resulting in a pH of 7 which is neutral. This is because the hydrogen ions from the acid and the hydroxide ions from the base combine to form water, which has a pH of 7.

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