U12(H) Q2

Front

What is the formula to calculate the concentration of hydrogen ions [H+] from pH?

Back

[H+] = 10^(-pH)

Front

If a solution has a pH of 1.77, what is the concentration of hydrogen ions [H+]?

Back

1.7 x 10^-2 M

Front

What is the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)?

Back

HCl + NaOH → NaCl + H2O

Front

How do you calculate the molarity of an acid from a titration with a base?

Back

Molarity (HCl) = (Molarity (NaOH) * Volume (NaOH)) / Volume (HCl) in liters.

Front

What is the pH of a neutral solution at 25°C?

Back

pH = 7

Front

How do you find the concentration of hydroxide ions [OH-] from pH?

Back

[OH-] = 10^(-14) / [H+] or [OH-] = 10^(14 - pH)

Front

If a solution has a pH of 8.50, what is the concentration of hydroxide ions [OH-]?

Back

3.2 x 10^-6 M

Front

What is the relationship between pH and acidity?

Back

Lower pH values indicate higher acidity.

Front

Which is a stronger acid: pH 1 or pH 4?

Back

pH 1 is a stronger acid.

Front

What is the molarity of ammonia if 19.5 mL of 0.750 M HCl is used to titrate a 5.00 mL sample?

Back

2.92 M