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1 year ago

If there is no change in concentrations, why is the equilibrium state considered dynamic?

1 answer:

6 0

This condition is not static and is dynamic, because both the forward and reverse reactions are still occurring with the same rate and no macroscopic change is observed.

<h3>What is chemical equilibrium and example?</h3>

Chemical equilibrium is a state during a reversible chemical reaction where there is no net change in the quantities of reactants and products. When a chemical reaction is reversible, the reactants from the initial reaction are created from the products as soon as they are generated.

When the rates of the forward and reverse reactions are equal, a reaction is said to be in chemical equilibrium. All around you, there are numerous instances of chemical balance. An instance would be a bottle of effervescent refreshing drink. The liquid in the container has carbon dioxide (CO2) dissolved in it.

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Paladinen [302]

Answer:

it's easy u just have to put them in a calculator the way they are it will give you your answer atleast I think so hope this helps

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2 years ago

Which direction does thermal energy flow in the following diagram? the picture is of someone holding an ice cream cone

Sliva [168]

The answer is B. Heat flows from the hand to the ice cream. The state of equilibrium won't occur for this since the only reactant is heat.

8 0

2 years ago

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Find the pH of a 0.100 molar H2C6O6 solution with ka, where KA is equal 8.0×10–5

lubasha [3.4K]

The pH of the solution is 2.54.

Explanation:

pH is the measure of acidity of the solution and Ka is the dissociation constant. Dissociation constant is the measure of concentration of hydrogen ion donated to the solution.

The solution of C₆H₂O₆ will get dissociated as C₆HO₆ and H+ ions. So the molar concentration of 0.1 M is present at the initial stage. Lets consider that the concentration of hydrogen ion released as x and the same amount of the base ion will also be released.

So the dissociation constant Kₐ can be written as the ratio of concentration of products to the concentration of reactants. As the concentration of reactants is given as 0.1 M and the concentration of products is considered as x for both hydrogen and base ion. Then the

$K_{a}=\frac{[H^{+}][HB] }{[reactant]}$

[HB] is the concentration of base.

$8 * 10^{-5} =\frac{x^{2} }{0.1}\\\\\\x^{2} = 8 * 10^{-5}*0.1$

$x^{2} = 0.08 * 10^{-4}\\ \\x = 0.283*10^{-2}$

Then

$pH = - log [x] = - log [ 0.283 * 10^{-2}]\\ \\pH = 2 + 0.548 = 2.54$

So the pH of the solution is 2.54.

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2 years ago

Which of the following is the most accurate description of all known spaces

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Answer:

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3 years ago

The osmotic pressure of a solution formed by dissolving 35.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25°c is __________ at

Lunna [17]

Mass of aspirin = 0.025 g
Molar mass of C9H8O4 is 180.1583 g/mol
moles of aspirin = .025g / 180.1583 g/mol = 0.000138767 moles
volume solution = .250 L
molarity of the solution = 0.000138767 moles / .250L =5.551 x 10 ^-04 Moles / liter
for aspirin i = Vant'Hoff factor = 1 particle in solution
T = 25 + 273 =298 K
osmotic pressure = M x R x T x i =
5.551 x 10 ^-04 mole L -1 x 0.08206 L atm K−1 mol−1 x 298 K x 1 = 0.0136 atmospheres

6 0

2 years ago

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