Write a balanced chemical equation to show the reaction of naoh with the diprotic acid h2so4.

Answers

Answer 1

Answer:

The balanced chemical equation that shows the reaction of NaOH with the diprotic acid H2SO4 is as follows:

2NaOH (aq) + H2SO4 (aq) → 2H2O (l) + Na2SO4 (aq)

BALANCEDCHEMICAL EQUATION:

A chemical equation involves the coming together of two or more substances called reactants to give rise to new substances called products.

According to this question, NaOH (sodium hydroxide) reacts with hydrogen sulphate (H2SO4) as represented in the chemical equation as follows:

NaOH (aq) + H2SO4 (aq) → H2O (l) + Na2SO4 (aq)

However, to balance the equation i.e. make the number of atoms of each element on both sides of the equation the same, we make use of coefficient 2 in front of NaOH and water.

2NaOH (aq) + H2SO4 (aq) → 2H2O (l) + Na2SO4 (aq)

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Answer 2

Answer:

Answer:

$2NaOH +H_2SO_4 \rightarrow Na_2SO_4 + 2H_2O$

Explanation:

it is a acid base reaction and this reaction is known as neutralization reaction and this reaction is exothermic .

Balanced chemical reaction:

$2NaOH +H_2SO_4 \rightarrow Na_2SO_4 + 2H_2O$

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Which substances dissolves in pure water and produces a solution that is a good conductor of electricity?1) CaCl2
2) C6H12O6
3) N2
4) O2

Answers

Answer:

$CaCl_2$

Explanation:

We have to keep in mind that a good conductor would be a substance that has the ability to produce ions (charged species). These species are responsible for the electricity conduction on water.

Therefore, we have to check which ones of these compounds will produce ions in water. For $N_2$ and $O_2$ we have diatomic molecules (also gases) this type of molecules don't have the ability to produce ions due to his simplicity, they already are very stable.

In the sugar molecule $C_6H_12O_6$ we have a covalent compound. The ions are produced by ionic compounds. So, this molecule can be discarded too.

For $CaCl_2$ we have an ionic compound that have the ability to produce ions:

$CaCl_2~~->~~Ca^+^2~+~2Cl^-$

So, this is the compound that would be a good conductor due to the $Ca^+^2$ and the $Cl^-$ ions.

CaCl2 is a good conductor of electricity when dissolved in water.

Consider this molecular‑level representation of a mixture of gases. There are three gas particles containing two spheres. There are six gas particles containing a single sphere of a different color. There are five gas particles containing a single sphere of a third color. If the partial pressure of the diatomic gas is 0.330 atm, what is the total pressure?

Answers

The total pressure of the gaseous mixture is 1.57 atm.

The mixture of the gases consists of 3 diatomic molecules, 6 monoatomic molecules, and 5 other monoatomic molecules.

The total number of molecules in the mixture are:

$\rm Total\;molecules\;=\;3+6+5\nTotal\;molecules\;=\;14$

Computation for the total pressure of the gas

The total pressure of a gas by Raoult's law is given as:

$\rm Total\;pressure=(Partial\;pressure)/(Mole\;fraction)$

The partial pressure of the diatomic gas is 0.330 atm.

The mole fraction of the diatomic gas is given as:

$\rm Mole\;fraction=(Molecules\;of\;diatomic\;gas)/(Total\;molecules) \n\nMole\;fraction=(3)/(14)\n\n Mole\;fraction=0.2$

The mole fraction of the diatomic gas is 0.2.

The total pressure of the gas is given as:

$\rm Total\;pressure=(0.330)/(0.2)\;atm\n\n Total\;pressure=1.57\;atm$

The total pressure of the gaseous mixture is 1.57 atm.

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Explanation:

The given data is as follows.

Number of particles of diatomic gas = 3

Number of particles of monoatomic gas = 6

Number of particles of another monoatomic gas = 5

Therefore, total number of particles or moles present will be as follows.

3 + 6 + 5 = 14

As we know that, mole fraction = $\frac{\text{moles of given substance}}{\text{total no. of moles}}$

Hence, more fraction of the diatomic gas will be as follows.

mole fraction = $\frac{\text{moles of given substance}}{\text{total no. of moles}}$

= $(3)/(14)$

= 0.21

Now, formula to calculate partial pressure will be as follows.

Partial pressure of one species = molar fraction of that species x total pressure

Therefore, $P_(diatomic) = \text{mole fraction diatomic} * P_(total)$

$P_(total) = (0.330 atm)/(0.21)$

= 1.57 atm

Thus, we can conclude that total pressure is 1.57 atm.

A sample of silver contains 5.71x10^22 atoms. how many moles of silver are present

Answers

According to the concept of Avogadro's number, there are 0.0948 moles of silver present in 5.71×10²² atoms of silver.

What is Avogadro's number?

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

Therefore, number of moles=number of atoms/Avogadro's number

number of moles=5.71×10²²/6.023×10²³=0.0948

Thus, there are 0.0948 moles in 5.71×10²² atoms of silver.

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N=n×Nav

n=N / Nav

(5.71×10^22) / (6.02×10^23)

n=0.09mol

What differentiates the isotopes of an element?

Answers

An isotope will have the same number of protons and electrons as the element on the periodic table, but it will have a different number of neutrons, so the atomic mass will change. Different isotopes of the same element have different numbers of neutrons, so they all have different masses

After being thoroughly stirred at 10.°C, which mixture is heterogenous?(1) 25.0 g of KCl and 100. g of H2O(2) 25.0 g of KNO3 and 100. g of H2O
(3) 25.0 g of NaCl and 100. g of H2O
(4) 25.0 g of NaNO3 and 100. g of H2O

Answers

The answer is (2) KNO3. This depends on the solubility of these four compounds at 10℃. For NaCl, it is 35.8 g, For NaNO3, 80.8 g. KCl, 31.2 g. KNO3, 21.9g. So only KNO3 is less than 25.0 g.

Answer:

Explanation:

Because if look at the Solubity curves you will notice other three doesn't go 25 grams. They start above the 25 grams.

Which statement is true about BF3, a nonpolar molecule? It has nonpolar bonds and a symmetrical structure. It has nonpolar bonds and an asymmetrical structure. It has polar bonds and a symmetrical structure. It has polar bonds and an asymmetrical structure. It has ionic bonds and symmetrical structure.

Answers

I think the correct answer is the first option. It has nonpolar bonds and a symmetrical structure. The structure of a BF3 molecule shows a symmetrical trigonal geometry. The net dipole moment of the molecule is zero therefore it is polar.

Answer: It has polar bonds and a symmetrical structure.

Explanation:

Formula used for calculating hybridization

$:{\text{Number of electrons}} =(1)/(2)[V+N-C+A]$

where, V = number of valence electrons present in central atom i.e. boron= 3

N = number of monovalent atoms bonded to central atom=3

C = charge of cation = 0

A = charge of anion = 0

$BF_3$

${\text{Number of electrons}} =(1)/(2)[3+3-0+0]=3$

The number of electrons is 3 that means the hybridization will be $sp^2$ and the electronic geometry of the molecule will be trigonal planar.

Thus as there are no lone pair of electrons, there is no distortion and the molecule is symmetrical. The B-F bonds are polar due to electronegativity difference but the polarities cancel due to symmetrical structure.

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