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3 years ago

What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution?

Chemistry

2 answers:

Harman [31]3 years ago

7 0

Answer:

C) acid-base neutralization

Explanation:

NaOH + CH₃COOH = CH₃COONa + H₂O

Break the solutions apart:

NaOH = Na⁺ + OH⁻

CH₃COOH = CH₃COO⁻ + H⁺

Combine the resulting solution after the reaction:

OH⁻ + H⁺ = H₂O

andrey2020 [161]3 years ago

7 0

Answer:

C) acid-base neutralization

Explanation:

In this type of titration, the equivalence point is at a pH greater than 7, due to weak acid anion hydrolysis, which is a hydrolysis that yields OH - ions.

Example: Titration of acetic acid with sodium hydroxide:

CH3COOH + NaOH→ NaCH3COO + H2O

NaCH3COO → Na+ + CH3COO–

At the equivalence point, all acetic acid was consumed and all NaOH was consumed. However, CH3COO– was produced. - pH is given by the solution of CH3COO - (weak acid anion hydrolysis) - Equivalence point: pH will be greater than 7. Since Na + is an acid-base neutral particle (strong base cation does not hydrolyze), only CH3COO– (weak acid anion) will undergo hydrolysis as shown below:

CH3COO- + H2O → CH3COOH + OH-

OH ions will increase the pH of the solution as they will react with H3O + by the equation:

OH- + H3O+ → 2H2O

We can follow a practical example of the neutralization reaction in our daily lives: in the preparation of a simple lemonade. We know that the lemon has acidity, because it is present citric acid, what to do then to soften the acrid taste in the juice of this fruit? It is necessary to add a base, in this case it is common to use sodium bicarbonate (NaHCO3) to neutralize the acid action and make the lemonade more tasty.

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The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride according to the reaction:

Nimfa-mama [501]

Answer:

Enthalpy change for the reaction is -67716 J/mol.

Explanation:

Number of moles of $AgNO_{3}$ in 50.0 mL of 0.100 M of $AgNO_{3}$

= Number of moles of HCl in 50.0 mL of 0.100 M of HCl

= $\frac{0.100}{1000}\times 50.0$ moles

= 0.00500 moles

According to balanced equation, 1 mol of $AgNO_{3}$ reacts with 1 mol of HCl to form 1 mol of AgCl.

So, 0.00500 moles of $AgNO_{3}$ react with 0.00500 moles of HCl to form 0.00500 moles of AgCl

Total volume of solution = (50.0+50.0) mL = 100.0 mL

So, mass of solution = ( $100.0\times 1.00$ ) g = 100 g

Enthalpy change for the reaction = -(heat released during reaction)/(number of moles of AgCl formed)

= $\frac{-m_{solution}\times C_{solution}\times \Delta T_{solution}}{0.00500mol}$

= $\frac{-100g\times 4.18\frac{J}{g.^{0}\textrm{C}}\times [24.21-23.40]^{0}\textrm{C}}{0.00500mol}$

= -67716 J/mol

[m = mass, c = specific heat capacity, $\Delta T$ = change in temperature and negative sign is included as it is an exothermic reaction]

4 0

3 years ago

What is a liquid mixture whose parts are evenly blended?.

Eva8 [605]

Answer:

A homogeneous mixture is a type of mixture in which the individual substances are evenly mixed.

Explanation:

3 0

2 years ago

PLEASE ANSWER <br> ARE THESE CORRECTTTTTT

Naddik [55]

1. The answer is E.

2. I agree with your answers.

3. I also agree with your answers

3 0

3 years ago

Read 2 more answers

You have 8 moles of a gas at 250 K in a 6 L container. What is the pressure of the gas? Show your work

Bogdan [553]

Hello:

In this case, we will use the Clapeyron equation:

P = ?

n = 8 moles

T = 250 K

R = 0.082 atm.L/mol.K

V = 6 L

Therefore:

P * V = n * R * T

P * 6 = 8 * 0.082* 250

P* 6 = 164

P = 164 / 6

P = 27.33 atm

Hope that helps!

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3 years ago

What needed to be present in marine mud to form fossil fuels?

UkoKoshka [18]

When organisms and plants died and sank to the bottom of swamps and oceans, brown soil-like materials called peat are formed. Over millions of years, the peat became covered with sand, clay and other minerals and the peat is converted into layers of sedimentary rocks. After a long time, different type of fossil fuels are formed.

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3 years ago