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3 years ago

Which terms represent two types of organic reaction

Chemistry

1 answer:

timofeeve [1]3 years ago

8 0

Answer:

Saponification and fermentation .

Explanation:

Hello,

In this case, we define:

- Sublimation as such physical change (the substance does not change its composition) from solid to gases by adding heat.

- Deposition as such physical change (the substance does not change its composition) from gas to solid by heat withdrawal.

- Saponification as such chemical change (the substance does changes its composition) which consists on the conversion of a fat, oil or lipid by adding heat in the presence of aqueous strong base such as NaOH or KOH into soap and alcohol.

- Fermentation as a biochemical change that produces chemical changes in organic substrates by the action of biocatalysts called enzymes. It typically turn glucose into piruvate, ethanol or short organic acids.

For that reason, both fermentation and saponification are chemical reactions, more specifically organic reactions since the reactants are mainly carbon-based.

Best regards.

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Calculate the entropy change for the reaction: Fe2O3(s) +3C(s) -> 2Fe(s) + 3CO(g)Entropy data:Fe2O3(s): 90 J/K molC(s): 5.7 J

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Explanation:

We are given: entropy of Fe2O3 = 90J/K.mol

: entropy of C = 5.7J/K.mol

: entropy of Fe = 27.2J/K.mol

: entropy of CO = 198J/K.mol

$\begin{gathered} \Delta S\text{ = S}_{products}-S_{reactants} \\ \\ \text{ = \lparen3}\times198+2\times27.2)-(3\times5.7+90) \\ \\ \text{ = 541.3J/K.mol} \end{gathered}$

Answer:

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1 year ago

Vinegar is classified as a base, acid, or is it neutral ?

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Answer:

Vinegar is acidic => acetic acid (HC₂H₃O₂)

Explanation:

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3 years ago

Stolb23 [73]

Answer:

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3 years ago

A 0.533 g sample of a carbonate salt is added to a flask. The only thing you know is that per formula unit, there is only one ca

dimulka [17.4K]

Answer:

$\mathbf{CrCO_3}$

Explanation:

The total mole of $H_2SO_4$ added = 15 × 1 × 10⁻³

= 15 × 10⁻³ mole

= 15 mmoles

the number of moles of NaOH added in order to neutralize the excess acid = 0.5905 × 29.393 = 17.36 mmoles

the equation for the reaction is:

2NaOH + $H_2SO_4$ --------> $Na_2SO_4 +2H_2O$

i.e

2 moles of NaOH react with $H_2SO_4$

1 moles of NaOH will react with 1/2 $H_2SO_4$

17.36 mmoles of NaOH = 1/2 × 17.36 mmoles of $H_2SO_4$

= 8.68 mmoles

Number of moles of $H_2SO_4$ that react with MCO₃ = Total moles of $H_2SO_4$ added - moles of $H_2SO_4$ reacted with NaOH

= (15 - 8.68) mmoles

= 6.32 mmoles

$H_2SO_4$ + $MCO_3$ ------> $M_2SO_4$ + $H_2O$ + $CO_2$

1 mole of $H_2SO_4$ react with 1 mole of $MCO_3$

6.32 mmoles of $H_2SO_4$ = 6.32 mmoles of $MCO_3$

number of moles of $MCO_3$ = 6.32 10⁻³ moles

mass of $MCO_3$ (carbonate salt) = 0.533 g

molar mass of $MCO_3$ = (M+60)g/mol

We all know that ;

number of moles = mass/molar mass

Then:

6.32 10⁻³ = 0.533 / (M+60)

(M+60) = 0.533/ 6.32 10⁻³

M + 60 = 84.34

M = 84.34 - 60

M = 24.34

Thus the element with the atomic mass of 24.34 is Chromium

The chemical formula for the compound is : $\mathbf{CrCO_3}$

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3 years ago