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FromTheMoon [43]
3 years ago
10

Which is the best description of the chemical reaction shown here in aqueous solution? ch3ch2cooh (aq) ↔ ch3ch2coo- (aq) + h+ (a

q)?
Chemistry
2 answers:
AnnZ [28]3 years ago
6 0
The given reaction: 
<span>ch3ch2cooh (aq) ↔ ch3ch2coo- (aq) + h+ (aq)
is called a reversible reaction.

This means that, the reaction does not reach an end point.
In this type of reactions, reactants react together to form products, while products combine together to form reactants.
So, the reaction proceeds in both direction forming both reactants and products.</span>
Vesna [10]3 years ago
6 0

Answer is: this chemical reaction is dissociation of acid.

Chemical reaction of dissociation of propanoic acid:

CH₃CH₂COOH(aq) ⇄ CH₃CH₂COO⁻(aq) + H⁺(aq).

In aqueous solution propanoic acid dissociates (covalent bond between an electronegative oxygen atom and a hydrogen atom is broken by heterolytic fission) into conjugate base (anion CH₃CH₂COO⁻) of the acid and a hydrogen cation (H⁺).

Dissociation is a process in which molecules) separate into smaller particles such as atoms or ions.

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The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.085 M, how long would it take u
olasank [31]

Answer: It will take 8.2 minutes until the concentration decreases to 0.055 M

Explanation:

The time after which 99.9% reactions gets completed is 40 minutes

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

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a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{13min}=0.053min^{-1}

b)  Time taken for 0.085 M to decrease to 0.055 M

t=\frac{2.303}{0.053}\log\frac{0.085}{0.055}

t=8.2min

Thus it will take 8.2 minutes until the concentration decreases to 0.055 M

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