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3 years ago

When the forward and reverse paths of a change occur at the same rate,

2 answers:

8 0

The correct answer is option B. When the forward and reverse paths of a change occur at the same rate, <span>the system is in equilibrium specifically in dynamic equilibrium.</span> Dynamic equilibrium is the balance in a process that is continuing. It is achieved in a reaction when the forward rate of reaction and the backward rate of reaction is at the same value or equal.

Norma-Jean [14]3 years ago

6 0

Answer:

b. the system is in equilibrium.

Explanation:

Chemical equilibrium occurs when any reaction is reversible, in which there are two possible reactions, one forward (where reactants turn into products) and a reverse one (where products turn reactants). These reactions have the same velocity.

In this state, the rates of forward and reverse reactions are equal, and concentrations of reagents and products remain unchanged.

The velocities within a reversible reaction (in equilibrium) can be represented as follows:

A + B ⇄ C + D

However, this state of equilibrium is vulnerable to some factors, such as changes in pressure, temperature and addition or withdrawal of one or more substances from the system.

These may change one of these velocities and consequently, modify the concentrations of reagents and/or products, causing an equilibrium shift.

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An experiment reacts 20.4 g of zinc metal with a solution containing an excess of iron (III) sulfate. After the reaction, 10.8 g

quester [9]

Answer:

The answer to your question is 92.7%

Explanation:

Balanced Chemical reaction

3 Zn + Fe₂(SO₄)₃ ⇒ 2Fe + 3ZnSO₄

Molecular weight

Zinc = 65.4 x 3 = 196.2g

Iron (III) = 56 x 2 = 112 g

Proportions

196.2 g of Zinc ------------------ 112 g of Iron

20.4 g of Zinc ----------------- x

x = (20.4 x 112) / 196.2

x = 2284.8/196.2

x = 11.65 g of Iron

% yield = $\frac{10.8}{11.65} x 100$

% yield = 0.927 x 100

% yield = 92.7

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3 years ago

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Which of the following is a good conductor of electricity?

maks197457 [2]

Answer:

Explanation:

Iron is the correct answer

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3 years ago

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Which statement describes the differences between nuclear reactions and chemical reactions?

bearhunter [10]

Chemical reactions are a change in substance while nuclear is destruction

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3 years ago

How do white blood cells fight pathogens?

jonny [76]

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3 years ago

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Consider the following reaction:

adell [148]

Answer:

1. d[H₂O₂]/dt = -6.6 × 10⁻³ mol·L⁻¹s⁻¹; d[H₂O]/dt = 6.6 × 10⁻³ mol·L⁻¹s⁻¹

2. 0.58 mol

Explanation:

1.Given ΔO₂/Δt…

2H₂O₂ ⟶ 2H₂O + O₂

-½d[H₂O₂]/dt = +½d[H₂O]/dt = d[O₂]/dt

d[H₂O₂]/dt = -2d[O₂]/dt = -2 × 3.3 × 10⁻³ mol·L⁻¹s⁻¹ = -6.6 × 10⁻³mol·L⁻¹s⁻¹

d[H₂O]/dt = 2d[O₂]/dt = 2 × 3.3 × 10⁻³ mol·L⁻¹s⁻¹ = 6.6 × 10⁻³mol·L⁻¹s⁻¹

2. Moles of O₂

(a) Initial moles of H₂O₂

$\text{Moles} = \text{1.5 L} \times \dfrac{\text{1.0 mol}}{\text{1 L}} = \text{1.5 mol }$

(b) Final moles of H₂O₂

The concentration of H₂O₂ has dropped to 0.22 mol·L⁻¹.

$\text{Moles} = \text{1.5 L} \times \dfrac{\text{0.22 mol}}{\text{1 L}} = \text{0.33 mol }$

(c) Moles of H₂O₂ reacted

Moles reacted = 1.5 mol - 0.33 mol = 1.17 mol

(d) Moles of O₂ formed

$\text{Moles of O}_{2} = \text{1.33 mol H$_{2}$O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{2 mol H$_{2}$O}_{2}} = \textbf{0.58 mol O}_{2}\\\\\text{The amount of oxygen formed is $\large \boxed{\textbf{0.58 mol}}$}$

8 0

3 years ago