What is Hf value?
Do you mean h, rather than H? h is Planck's constant, f would conventionally be frequency.
At equilibrium a solution of hf has a pH of 4.9 if hf 5.5 x 10-5 and f- 8.9 x 10-5 what is the value of ka for hf at this temperature?
copied-in question and answer
Because of high value of hydration energy.
At equilibrium a solution of hf has a pH of 4.1 if hf equals 1.4 x 10-4 and f equals 6.0 x 10-5 what is the value of ka for hf at this temperature?
apexvs answer 3.4 x 10-5
E=hf, where h is Plank's Constant (look it up for the value)
Hf is hafnium. HF is hydrogen fluoride.
HF becomes ionized in water but water in HF does not so HF is stronger acid.
The Hreaction is the difference between Hf, products and Hf, reactants
Hf is the element hafnium. A dense gray metal. HF is the compound hydrogen fluoride, a toxic, acidic gas.
pH values depend on the concentration of acid solution for eg. 0.02 M HF has pH=2.47
The kinetic energy of an emitted electron must be less than hf-φ. An electron uses energy to reach the surface of the metal. KE= hf - φ A certain amount of energy is required by a photoelectron.
hf is the energy of photons incident on the surface
No, it is not ionic. HF is covalent.
HF is hydrogen fluoride.
No HF is polar
4.65 g HF * 1mol HF * 2 mol NH3 * 17.04g NH3 ------------ ----------- ----------- --------- = 1.32 g NH3 20.01g HF 6 mol HF 1 mol NH3
No. Hf is hafnium. HF is hydrofluoric acid. Capitalization matters when writing chemical formulas.
Yes, HF is hydrofluoric acid.
HF is a strong acid.
HF is not an oxyacid; no oxygen in the molecule.
where liquid Hf is used
Yes. HF is hydrofluoric acid.
There are no hydrogen bonds in HF.
HF is a weak polar bond
HF Bieling was born in 1887.
HF Bieling died in 1964.
The chemical symbol Hf is for hafnium.
Hf is the symbol of hafnium atom.
HF is highly polar.
Both are halogen acids but HCl is a gas and HF is a liquid, HCl is strong acid while HF is weak. HCl is highly soluble in water while HF is less soluble. HCl may kept in glass bottle while HF does not.
HF is technically a weak acid.
HF, or hydrofluoric acid, is a weak acid.
Hydrofluoric acid (HF) is a weak acid.
The HF band is from 3 to 30MHz
Hf, reactants > Hf, products
The CRX HF normally had an "HF" emblem on the rear right panel, directly to the right of the hatch. The HF also had an 8 valve, 1.5 liter engine with Multi-Point fuel injection.
Yes HF is stronger than CH3COOH
HF stands fo hydrogen fluoride
Hf + oh- ---> f- + h2o
hf + koh -> h2o + kf
HF molecules form hydrogen bonds.
HF is the chemical formula (not symbol) of the hydrofluoric acid.
why the size of HF is greater then HCL
88-89 hf crx uses 190cc 90-91 hf crx uses 240cc
The HF band is considered to be 3 Mhz to 30 Mhz.
The conjugate base of HF is the fluoride ion F-
Ebola hf stands for Ebola Hemorrhagic Fever.
HF exhibits very strong hydrogen bonding.
HF is diatomic, so the only possible geometry is linear.
Three moles of HF have 60,03 g.
The solution of hydrogen fluoride (HF) is hydrofluoric acid.