How do you find the pH of HF?

How do you find the pH of HF?

for which the acid ionization constant Ka = 6.94 x 10-4 = [H3O+][F-]/[HF]. We will calculate the pH of an aqueous solution which was made up as 0.1 molar HF. log[H3O+] = -3 + 0.90 = – 2.10 and pH = 2.10.

Is NaF strong or weak?

You can decide the acidity or basicity of salt solutions by noting whether the corresponding acid and base are strong or weak. For example, NH4Br is the salt of a weak base (NH3) and a strong acid (HBr), so the salt is acidic. Similarly, NaF is basic (it is the salt of a strong base, NaOH, and a weak acid, HF).

Will NaF form a basic solution?

A salt consisting of the anion of a strong acid and the cation of a strong base yields a neutral solution because the ions do not react with water. NaF contains the anion F-, which is the anion of weak acid HF, hence, F- acts as a base. So, the solution of NaF in water is basic in nature.

Is HF and NaF a buffer?

Execution of Strategy: (a) HF and NaF are mixed. HF and F- will both be present. This will make a buffer. The amounts are basically irrelevant since neither one is ridiculously small.

Does NaF dissolve in water?

Sodium fluoride

Names
Melting point	993 °C (1,819 °F; 1,266 K)
Boiling point	1,704 °C (3,099 °F; 1,977 K)
Solubility in water	36.4 g/L (0 °C); 40.4 g/L (20 °C); 50.5 g/L (100 °C)
Solubility	slightly soluble in HF, ammonia negligible in alcohol, acetone, SO2, dimethylformamide

Is HF stronger than HNO2?

Relatively speaking, HNO3 is considered a verystrong acid, because the H+ ion will dissociate more readily in water from the NO3-, which results in a lower pKa (dissociation constant) than HF a weaker acid. Why is HNO2 a weak acid? HNO2 a strong or weak acid. Because every acid reacts with water.

Why is HClO4 stronger than HBrO4?

Among oxoacids of elements of the same group having similar composition, acid strength increases as electronegativity increases. Since chlorine is more electronegative than bromine, HClO4 is a stronger acid than HBrO4.