What are the pKA s of HCN, hydrocyanic acid, and HF,hydrofluoric acid? Based solely on...

What are the pKA s of HCN, hydrocyanic acid, and HF, hydrofluoric acid? Based solely on the pKA values, what would you expect the products of the reaction below to be? Briefly explain.

HCN + HF --> ?

Expert Solution

pKa of HF = 3.1

pKa of HCN = 9.2

As pKa value show that HCN is weak acid as compared to HF so H+ will be released by HF

HCN(aq) + HF(aq) = H+(aq) + F-(aq) + HCN(aq)

HCN will not present in dissociate form or present in very small amount

queen_honey_blossom answered 2 years ago

What is the percent ionization of 0.45M hydrocyanic acid (HCN, pKa =9.21)

Hydrocyanic acid (HCN) is a weak acid that dissociates in water as follows. HCN(aq) + H2O(l)...

Hydrocyanic acid (HCN) is a weak acid that dissociates in water as follows. HCN(aq) + H2O(l) equilibrium reaction arrow H3O+(aq) + CN −(aq) The acid-dissociation constant (Ka) for hydrocyanic acid is 6.2 ✕ 10−10. Calculate the percent ionization (percent dissociation) if the initial concentration of hydrocyanic acid was 0.29 M.

Hydrofluoric acid, HF, has a K a of 6.8 × 10í. What are [H3O+ ], [Fí...

Hydrofluoric acid, HF, has a K a of 6.8 × 10í. What are [H3O+ ], [Fí ], and [OHí ] in 0.790 M HF? [H3O+] = (unrounded) [F ] = M [OHí ] = (Enter your answer in scientific notation.)

Hydrocyanic acid, HCN, is a weak acid. Write a net ionic equation for the reaction of...

Hydrocyanic acid, HCN, is a weak acid. Write a net ionic equation for the reaction of aqueous hydrocyanic acid and aqueous sodium hydroxide.

Given the following information: nitrous acid = HNO2 hydrocyanic acid = HCN HNO2 is a stronger...

Given the following information: nitrous acid = HNO2 hydrocyanic acid = HCN HNO2 is a stronger acid than HCN (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.080 M aqueous nitrous acid and sodium cyanide are mixed. It is not necessary to include states such as (aq) or (s). + + (2) Which is the strongest base, NO2- or CN- ? (3) At equilibrium the what will be favored?

Given the following information: benzoic acid = C6H5COOH hydrocyanic acid = HCN C6H5COOH is a stronger...

Given the following information: benzoic acid = C6H5COOH hydrocyanic acid = HCN C6H5COOH is a stronger acid than HCN (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.052 M aqueous benzoic acid and sodium cyanide are mixed. It is not necessary to include states such as (aq) or (s). _______ + _______ = _________ + _________ (2) Which is the strongest base, C6H5COO- or CN- ? (3) At equilibrium the products or reactants...

Given the following information: hydrocyanic acid = HCN acetic acid = CH3COOH CH3COOH is a stronger...

Given the following information: hydrocyanic acid = HCN acetic acid = CH3COOH CH3COOH is a stronger acid than HCN (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.054 M aqueous hydrocyanic acid and sodium acetate are mixed. It is not necessary to include states such as (aq) or (s). ______ + _______ = ______ + ________ (2) Which is the strongest base, CN- or CH3COO- ? (3) At equilibrium (products or reactants) the...

Hydrofluoric acid (HF) can be manufactured by treating calcium fluoride (CaF2) with sulfuric acid (H2SO4). A...

Hydrofluoric acid (HF) can be manufactured by treating calcium fluoride (CaF2) with sulfuric acid (H2SO4). A sample of fluorospar (the raw material) contains 75% by weight CaF2 and 25% inert (nonreacting) materials. The pure sulfuric acid used in the process is in 30% excess of that theoretically required. Most of the manufactured HF leaves the reaction chamber as a gas, but a solid cake is also removed from the reaction chamber that contains 5% of all the HF formed, plus...

4. The following shows titration of hydrocyanic acid(HCN) with potassium hydroxide (KOH). 100ml of 0.02M HCN...

4. The following shows titration of hydrocyanic acid(HCN) with potassium hydroxide (KOH). 100ml of 0.02M HCN was titrated with 0.050M of KOH. (Ka of HCN is 4.9x10-10) HCN(aq) +KOH(aq)----->KCN(aq)+H2O(l) a) How much KOH solution is needed to reach the equilence point? b)Calculate pH at the equivalence point. c)Calculate pH when 15mL of KOH was added. d)Calculate pH when 50mL of KOH was added.

Find the pH of a 0.245 M NaF solution. (The Ka of hydrofluoric acid, HF, is...

Find the pH of a 0.245 M NaF solution. (The Ka of hydrofluoric acid, HF, is 3.5×10−4.)

Question