Ka = [H+][A-] / [HA]

Hence

[H+] = Ka[HA] / [A-]

Remember pH = -log(10)[H+]

'logging' both sides.

-log(10)[H+] = - log(10)Ka[HA] / [A-]

By algebraic manipulation of log.

pH = -log[A-]^-1 - logKa - log[HA]

pH = log[A-] - logKa - log[HA]

pH = pKa - log[HA]/[A-]

NO!!!!

Reason; marble is calcium carbonate.

halogens

dsqd

Remember the Law of Conservation of Mass. This means that the given number of atoms and elements on both sides of the reaction eq'n MUST be the same.

It is also known as a BALANCED EQUATION.

e.g.

2KOH + H2SO4 = K2SO4 + 2H2O

In this case the prefix '2' of KOH, indicates that there are 2 x K , 2 x O & 2 x H. The suffix '2' in H2SO4 indicates 2 X H , only 1 x S & 4 x O.

So overall on the reaction side we have

2 x K

6 x O

4 X H

1 x S .

You MUST end up with this same numbers on the product side.

Hence we have in K2SO4 , 2 x K, 1 x S , & 4 x O. The prefix '2' of H2O indicates that there are 2 x 2 = 4 H & 2 x 1 =2 O

Hence, overall we have on the product side

2 x K

4 + 2 = 6 x O

4 x H

1 x S

This agrees with the reactant numbers and elements, so the chemical reaction equation is balanced.

Hope that helps!!!!

Para-phthalic acid" is not a commonly recognized chemical compound or term. It seems like there might be a misunderstanding or a typographical error in the name you're referring to. If you have a different chemical or substance in mind, please provide the correct name, and I'd be happy to provide information about it

Yes, because as pressure increases, the collisions between gas particles would occur more frequently and with more force. Therefore, the amount of potential energy would increase, and it would take a shorter time for the activation energy to be reached.

Mercury and Gallium comes very close also.

You didn't say what the reactant is? Example 2NaCl → 2Na + Cl2 reactant is on the left so it's NaCl So the state is solid or salt to be specific.

Rainwater is naturally slightly acidic because carbon dioxide from the air dissolves in it. Minerals in rocks may react with the rainwater, causing the rock to be weathered. Some types of rock are easily weathered by chemicals. For example, limestone and chalk are mostly calcium carbonate. When acidic rainwater falls on limestone or chalk, a chemical reaction happens. New, soluble, substances are formed in the reaction. These dissolve in the water, and then are washed away, weathering the rock. -BBC: The rock cycle

church

At STP it is a soft shiny metal, which readily oxidises to rubidium oxide in the atmosphere.

Since it is Group 1 pf the Periodic Table, it behaves like sodium or potassium . Since it 'lower' down the Group it reacts more vigorously that sodium or potassium .

1. Filtration: This method uses a filter to separate solid particles from a liquid or gas.

2. Distillation: This method is used to separate two or more liquids with different boiling points by heating the mixture and collecting the vapors that are produced.

3. Evaporation: This method is used to separate a solid from a liquid by heating the mixture until the liquid evaporates and leaves behind the solid.

4. Chromatography: This method separates different components of a mixture based on their ability to be attracted to a stationary phase or solvent.

5. Crystallization: This method is used to separate a solid from a liquid by cooling the mixture until the solid crystallizes out of the liquid.

6. Centrifugation: This method uses centrifugal force to separate components of a mixture based on their density.

7. Magnetic separation: This method separates magnetic substances from non-magnetic substances by using a magnet to attract the magnetic particles.

KI is potassium iodide.

Why is hairspray a collide in mixtures

Cl2 is the symbol of the diatomic neutral molecule of chlorine; the anion chloride is Cl-. The common valence of chlorine is -1.

physical change

Mercury is an element.

It will form compounds; mercuric chloride, mercuric sulfate and (of course) mercury fluoride.

It becomes a solution if you put it in concentrated nitric acid.

pH is the negative logarithm to the base ten of the hydrogen ion concentration.

Mathematically.

pH = - log(10)[H^+]

Since H ^+ is 2.45 x 10^(-5)

Substitute in

pH = -log(10)[2.45 x 10^(-5)]

On your calculator using 'log' button.

pH = -(-4.610833916)

Double negative

Hence

pH = 4.61 ( pH is always quoted to 2 d.p.).

The inverse process is

[H^+] = 10^(-pH)

The same elements may be isotopes , because it contains a different number of neutrons in the nucleus.

Hydrogen exhibits three different isotopes. viz:-

#1 ; protium ; 1 proton, 0 neutrons, 1 electron

#2 ; deuterium ; 1 proton, 1 neutron, 1 electron

#3 tritium ; 1 proton, 2 neutrons, 1 electron

NB Notice the different number of neutrons.

The general equation for burning/combusting fossil fuels is:-

fossil fuel + oxygen(air) = Carbon dioxide and Water.

Three molecules of calcium carbonate (CaCO3) has nine(9) oxygens.

Think of 3CaCO3 = CaCO3 + CaCO3 + CaCO3.

Each molecule of CaCO3 has ;-

1 atoms of calcium (Ca)

1 atom of carbon (C)

3 atoms of oxygen (O3 = O + O + O).

So if one molecules of CaCO3 has 3 oxygens, then

three molecules of CaCO3 has 3 x 3 = 9 oxygens. The answer!!!!!