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ad-work [718]
3 years ago
12

You measure out 14.66 mL of vinegar solution. You used 13.58 mL of 0.115 M NaOH solution to titrations to the endpoint. What wha

t the lol story of the vinegar solution?
Chemistry
1 answer:
podryga [215]3 years ago
3 0

Molarity of Vinegar solution is 0.107 M

<u>Explanation:</u>

Let V1 be the volume of NaOH = 13.58 ml

Let V2 be the volume of Vinegar = 14.66 ml

Let M1 be the molarity of NaOH = 0.115 M

Let M2 be the molarity of Vinegar = ?

Using the Law of Volumetric analysis, V1M1= V2M2

Rearranging the equation to get M2 as,

M2 = V1M1/V2 = 13.58 ml * 0.115 M/14.66 ml = 0.107 M

So the Molarity of Vinegar = 0.107 M

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An element is a mixture of two isotopes. One isotope has an atomic mass of 34.969 amu and an abundance of 64.88%. The other isotope has an atomic mass 36.966 amu.


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3 years ago
Part a use these data to calculate the heat of hydrogenation of buta-1,3-diene to butane. c4h6(g)+2h2(g)→c4h10(g)
Reptile [31]

<u>Answer:</u> The heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

<u>Explanation:</u>

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as \Delta H

The equation used to calculate enthalpy change is of a reaction is:

\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]

For the given chemical reaction:

C_4H_6(g)+2H_2(g)\rightarrow C_4H_{10}(g)

The equation for the enthalpy change of the above reaction is:

\Delta H_{rxn}=[(1\times \Delta H_{(C_4H_{10})})]-[(1\times \Delta H_{(C_4H_6)})+(2\times \Delta H_{(H_2)})]

We are given:

\Delta H_{(C_4H_{10})}=-2877.6kJ/mol\\\Delta H_{(C_4H_6)}=-2540.2kJ/mol\\\Delta H_{(H_2)}=-285.8kJ/mol

Putting values in above equation, we get:

\Delta H_{rxn}=[(1\times (-2877.6))]-[(1\times (-2540.2))+(2\times (-285.8))]\\\\\Delta H_{rxn}=234.2J

Hence, the heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

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How can you tell a chemical change has happened?
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How can I tell if a chemical reaction is occurring? A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

Explanation:

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110 degrees C

Explanation:

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As noted in Assignment 1.4.1., alkylation of benzene with 1-chlorobutane in the presence of AlCl3 gives both butylbenzene and (1
Sunny_sXe [5.5K]

Answer:

Use the Bromotriflouride catalyst, BF₃

Explanation:

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