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3 years ago

Write the equilibrium constant expression for this reaction: h2so4 (aq) → 2h+ (aq) + so−24 (aq)

2 answers:

8 0

when Kc = [the concentration of products]^(no.of its mol in the balanced equation) / [the concentration of the reactants]^(no.of mol in the balanced equation)
∴ The equilibrium constant expression for this reaction is:
Kc= [H+]^2 * [So4-2] / [H2SO4]

Kisachek [45]3 years ago

7 0

Answer:

$Keq =\frac{[H+]^{2} [SO4^{2-}]^{2} }{[H2SO4]}$

Explanation:

The equilibrium constant K is a parameter that relates the concentration of products to that of the reactants at equilibrium and under a given temperature.

Consider a hypothetical reaction:

xA + yB ↔ zC

where A and B are the reactants ; C is the product

x and y are the coefficients of the reactants; z is the product coefficient

The equilibrium constant is given as:

$Keq = \frac{[C]^{z} }{[A]^{x}[B]^{y}}$

The given reaction is:

$H2SO4(aq)\rightleftharpoons 2H+(aq)+ SO_{4}^{2-}(aq)$

$Keq =\frac{[H+]^{2} [SO4^{2-}]^{2}}{[H2SO4]}$

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How many molecules are there in .230kg of CoCl2?

vovikov84 [41]

Answer:

CoCI2 molecular weight is 129.84 g/mole

230 CoCI2 divided by the molecular weight

230 g/ 129.84 g/mole = 1.77 moles of CoCI2

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3 years ago

An isotope has more or less ____________________________ in the nucleus.

Serggg [28]

Answer:

Neutrons

Explanation:

An isotope has more or less number of neutrons in the nucleus.

The nucleus of an atom is made up of two fundamental particles, the protons and the neutrons. Protons are positively charged particles in an atom. Neutrons do not carry any charges whatsoever.

Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons.
Isotopes differ in masses due to the number of neutrons they contain.
Therefore, they show similar chemical properties.

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3 years ago

4.41 g of propane gas (C3H8) is injected into a bomb calorimeter and ignited with excess oxygen, according to the reaction below

gayaneshka [121]

Answer : The heat of the reaction is -221.6 kJ

Explanation :

Heat released by the reaction = Heat absorbed by the calorimeter

$q_{rxn}=-q_{cal}$

$q_{cal}=c_{cal}\times \Delta T$

where,

$q_{rxn}$ = heat released by the reaction = ?

$q_{cal}$ = heat absorbed by the calorimeter

$c_{cal}$ = specific heat of calorimeter = $97.1kJ/^oC=97100J/^oC$

$\Delta T$ = change in temperature = $(T_{final}-T_{initial})=(27.282-25.000)=2.282^oC$

Now put all the given values in the above formula, we get:

$q_{cal}=(97100J/^oC)\times (2.282^oC)$

$q_{cal}=221582.2J=221.6kJ$

As, $q_{rxn}=-q_{cal}$

So, $q_{rxn}=-221.6kJ$

Thus, the heat of the reaction is -221.6 kJ

6 0

3 years ago

A chemistry student conducted several different procedures. Which of the following procedures best demonstrates the law of conse

Vsevolod [243]

Answer:

combining 2 grams of copper and 4 grams of sulfur to make 6 grams of copper sulfate

Explanation:

The Law of Conservation of Mass states that matter cannot be created or destroyed in chemical reactions. It posits that the mass of a substance remains unchanged after undergoing a chemical process.

Therefore, according to the question, the procedure that best demonstrates the law of conservation of mass after the chemistry student conducted different procedures is option D.

This is because, the mass of copper and sulfate did not change but merely combined to form a compound.

7 0

3 years ago

Which of the following is not a true statement? a. oxiranes are three-membered ring ethers. b. oxetanes are five-membered ring e

AURORKA [14]

The true statement will be "oxetanes are five-membered ring ethers."

The four-membered ring of octane, a saturated organic heteromonocyclic parent, contains three carbon atoms but one oxygen atom. It belongs to the family of oxetanes well and has a saturated organic heteromonocyclic parent.

Oxetanes can also be widely employed as monomers inside the cationic or anionic synthesis including both branched but also linear poly-ethers. Thermal decomposition, photolysis, as well as cycloaddition are further beneficial reactions.

The structure of oxetanes are shown as:

The Patern-Büchi reaction is another process that could result in the formation of an oxetane ring. In addition to decarboxylation of such a six-membered cyclic carbonate, diol cyclization can also create the oxetane ring.

a)Oxiranes has two carbon ring with one oxygen.

b) Oxetanes has 3 carbon ring with one oxygen

c) Dioxanes has six membered ring with two oxygen.

Therefore, the true statement will be "oxetanes are five-membered ring ethers."

Hence, the correct answer will be option (b)

To know more about membered ring

brainly.com/question/16952957

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6 0

2 years ago