What is the ph of a buffer that is 0.6 m hf and 0.2 m naf? the ka of hf is 6.8 × 10−4. what is the ph of a buffer that is and ? the of is . 3.65 2.69 3.17 3.50?

pH = pKa + log([A^-]/[HA]) [A^-] = [KF] = 0.43 M, [HA] = [HF] = 0.20 M pKa = -logKa = -log(6.8x10^-4) = 3.17 pH = 3.17+ log(0.43 / 0.20) = 3.50 You can determine the [H3O^+] by using the equation for pH pH = -log[H3O^+] [H3O^+] = 10^-pH = 10^-3.50 = 3.16x10^-4 M

The most plausible answer is b, duration. the given amount of time is considered how long it last for.

The dispersed phase is liquid and dispersed medium in milk is liquid