What is the maximum amount of kcl that can dissolve in 200 g of water? (the solubility of kcl is 34 g/100 g h?

Classify the following as Arrhenius, Bronsted-Lowry, or Lewis acid-base reactions. A reaction may fit all, two, one, or none of

nika2105 [10]

Answer:

I. Lewis acid-base reaction

II. Arrhenius, Brønsted-Lowry, and Lewis' acid-base reaction

III. Brønsted-Lowry and Lewis'acid-base reaction

IV. Lewis acid-base reaction

Explanation:

According to Arrhenius, an acid is a substance that dissolves in water to produce H+ ions, and a base is a substance that dissolves in water to produce hydroxide (OH−) ions.

In the reaction below, AH is an avid, BOH is a base reacting together to form a salt(A-B+) and water only.

AH + BOH ---> A-B+ + H2O

According to Brønsted-Lowry definition, an acid is any substance that can donate a proton, and a base is any substance that can accept a proton.

In the reaction below, AH is an acid while B is a base, reacting together to form an acid-base conjugate pair.

AH + B <-----> BH+ + A-

According to Lewis' definition, an acid is a species that accepts an electron pair while a base donates an electron pair resulting in a coordinate covalently bonded compound, also known as an adduct. In the reaction below, A+ is an acid, B- is a base, reacting together to form product A-B.

A+ + B- ------> A-B

Considering the above definitions;

I. Cu²+ + 4 Cl− ---> CuCl4²− is a Lewis acid-base reaction because it involves electron sharing only.

II. Al(OH)3 + 3HNO3 ---> Al3+ + 3H2O + 3 NO3− is an Arrhenius, Brønsted-Lowry, and a Lewis acid-base reaction because it involves protons, electrons and hydroxide ions.

III. N2 + 3 H2 ---> 2NH3 is a Lewis acid-base reaction because it involves sharing of electrons only.

IV. CN− + H2O ---> HCN + OH is both a Lewis and Brønsted-Lowry acid-base reaction because both protons and electrons sharing is involved.

5 0

3 years ago

What is the formula for diarsenic pentoxide

Andru [333]

The answer is As2O5

good luck

7 0

2 years ago

The model on the right looks bumpy, but when you break a large salt crystal in two, the edges of the split often look straight a

emmasim [6.3K]

There is no problem with the model formed by atoms as solid spheres for macroscopic measurements because the atoms are extremely small.

<h3>What is Dalton's atomic model?</h3>

This was formulated in 1808 and states that atoms with spheres cannot be divided. It also states that solids are formed by contact between the spheres and chemical compounds from joining of atoms of two or more elements.

The size of the atoms in the form of sphere is very small as it is known that it is of the order of 10⁻⁹ m, therefore, having a macroscopic crystal more than 10⁻⁶ m in length which is why the model of the atom as solid spheres for macroscopic measurements has no problem.

Read more about Dalton's atomic theory here brainly.com/question/13157325

#SPJ1

5 0

1 year ago

Suppose you know the number of protons in an atom. What other information would you need in order to determine the mass of the a

Dmitrij [34]

The number of neutrons because the number of neutrons plus the number of protons equals the atomic mass

7 0

3 years ago

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Terephthalic acid, used in the production of polyester fibers and films, is composed of carbon, hydrogen, and oxygen. When 0.694

Mrrafil [7]

Answer:

the emprical formula is C4H3O2

Explanation:

To calculate the empirical formula we should estimate the amount of each atom present.

It was generated CO2 and H2O, so we can estimate the moles of C, H and O in the sample.

1. moles of C can be estimated from CO2 generated

First calculate the moles of CO2 from the mass generated of CO2 (1.471) using the molecular weight. MwCO2= 12.01+2*16 = 44.01 g/mol, so the moles of CO2 are $\frac{1.471 g}{44.01 g/mol} = 0.03342 mol$
Note that each CO2 has 1 C so moles of C= 0.03342

2. moles of H can be estimated from H2O generated

First calculate the moles of H2O using mass generated (0.226g) and molecular weight. MwH2O= 2*1.008+16 = 18.016 g/mol, so the moles of H2O are $\frac{0.226 g}{18.016 g/mol} = 0.01254 mol$
Note that each H2O has 2 H so moles of H= 2*0.01254 =0.02509

3. O can not be calculated in the same way, since the combustion of the sample uses oxygen from air, so the oxygen in the products is not all from the sample. We calculate it from initial sample mass and the mass of C and H.

Mass of C and O is calculated multiplyng the moles by the molecular weight. Mass of C = 0.03342*12.01= 0.4014g and Mass of H =0.02509*1.008= 0.02509g
Mass of O = mass sample - mass C - mass H = 0.6943 - 0.4014 - 0.02509 = 0.26781g
Moles of O = $\frac{0.280255 g}{16.00 g/mol} = 0.01674 mol$

4. Now we can estimate the mole ratio C:H:O

C:H:O

0.03342:0.02509:0.01674

In order to obtain integer we should divide by the minor number and

1.9964:1.4988:1 rounding... 2:1.5:1

We have decimals yet. Multiply all by the smallest integer needed to get all integer numbers, in this case 2

2*(2:1.5:1)=4:3:2

So the emprical formula is C4H3O2

6 0

3 years ago

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