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1 year ago

Draw Lewis structures for each of the following moecules. Show resonance structures, if they exist

1 answer:

6 0

A Lewis structure is a visual representation of the bonds between atoms and it shows the lone pairs of electrons in molecules. This structure is also referred as Lewis dot diagram. Resonance structure are multiple Lewis structure that describe a single molecule.

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consider the reaction between sulfite and a metal anion, X2-, to form the metal, X, and thiosulfate: 2 X2-(aq) + 2 SO32- + 3 H2O

Dafna11 [192]

Answer:

$E_{red}^{0}$ for X is -1.20 V

Explanation:

Oxidation: $2\times$ [ $X^{2-}(aq.)-2e^{-}\rightarrow X(s)$ ]

reduction: $2SO_{3}^{2-}(aq.)+3H_{2}O(l)+4e^{-}\rightarrow S_{2}O_{3}^{2-}(aq.)+6OH^{-}(aq.)$

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overall: $2X^{2-}(aq.)+2SO_{3}^{2-}(aq.)+3H_{2}O(l)\rightarrow 2X(s)+S_{2}O_{3}^{2-}(aq.)+6OH^{-}(aq.)$

So, $E_{cell}^{0}=E_{red}^{0}(SO_{3}^{2-}\mid S_{2}O_{3}^{2-})-E_{red}^{0}(X\mid X^{2-})$

or, $0.63=-0.57-E_{red}^{0}(X\mid X^{2-})$

or, $E_{red}^{0}(X\mid X^{2-})= -1.20$

So, $E_{red}^{0}$ for X is -1.20 V

8 0

2 years ago

Read 2 more answers

As part of an investigation, students combined substances in a beaker to observe chemical reactions. They performed two procedur

asambeis [7]

Answer:

Explanation:

8 0

1 year ago

Read 2 more answers

A particular reaction has an enthalpy and entropy of reaction of ∆H = +33 kJ/mol and ∆S = +0.15 kJ/mol⋅K. At the three indicated

Thepotemich [5.8K]

Answer:

Explanation: check my paage

4 0

1 year ago

Many drugs decompose in blood by a first-order process. two tablets of aspirin supply 0.60 g of the active compound. after 30 mi

Firdavs [7]

The half-life of a first-order reaction is determined as follows:

t½=ln2/k

From the equation, we can calculate the first-order rate constant:

k = (ln(2)) / t½ = 0.693 / 90 = 7.7 × 10⁻³

When we know the value of k we can then calculate concentration with the equation:

A₀ = 2 g/100 mL

t = 2.5 h = 150min

A = A₀ × e^(-kt) =2 × e^(-7.7 × 10⁻³ × 150) = 0.63 g / 100ml

= 6.3 × 10⁻⁴ mg / 100ml

3 0

1 year ago

Read 2 more answers

A proton transfer reaction can occur when an aldehyde is placed in strong base, such as an alkoxide ion, producing an alcohol an

Pani-rosa [81]

Hi, you have not provided structure of the aldehyde and alkoxide ion.

Therefore i'll show a mechanism corresponding to the proton transfer by considering a simple example.

Explanation: For an example, let's consider that proton transfer is taking place between a simple aldehyde e.g. acetaldehyde and a simple alkoxide base e.g. methoxide.

The hydrogen atom attached to the carbon atom adjacent to aldehyde group are most acidic. Hence they are removed by alkoxide preferably.

After removal of proton from aldehyde, a carbanion is generated. As it is a conjugated carbanion therefore the negative charge on carbon atom can conjugate through the carbonyl group to form an enolate which is another canonical form of the carbanion.

All the structures are shown below.

7 0

2 years ago