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3 years ago

Write a net ionic equation for the reaction of Iron(III) Chloride and Potassium Thiocyanate.

Chemistry

1 answer:

zysi [14]3 years ago

3 0

FeCl3 + 6KSCN -------> K3[Fe(SCN)6] + 3KCl

Fe³⁺ + 3Cl⁻ +6K⁺ +6SCN⁻ -----> 3K⁺ + [Fe(SCN)6]³⁻ + 3K⁺ +3Cl⁻

A net ionic equation:

Fe³⁺ + 6SCN⁻ --------> [Fe(SCN)6]³⁻

You probably need this equation in the different form

FeCl3(aq) + 3KSCN(aq) -------> Fe(SCN)3(s) + 3KCl(aq)

Then net equation:

Fe³⁺(aq) + 3SCN⁻(aq) -----> Fe(SCN)3(s)

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C2H4(g) + H2(g) → C2H6(g) ΔH = –137.5 kJ; ΔS = –120.5 J/K Calculate ΔG at 25 °C and determine whether the reaction is spontaneou

Katen [24]

Answer:-ΔG=-101.5KJ

Explanation:We have to calculate ΔG for the reaction so using the formula given in the equation we can calculate the \Delta G for the reaction.

We need to convert the unit ofΔS in terms of KJ/Kelvin as its value is given in terms of J/Kelvin

Also we need to convert the temperature in Kelvin as it is given in degree celsius.

$\Delta H=-137.5\\ \Delta S=-120J/K\\ \Delta S=-0.120KJ/K\\ T=25^{.C}\\ T=273+25=298 K\\ \Delta G=?\\ \Delta G=\Delta H-T\Delta S\\\Delta G=-137.5KJ-(278\times -0.120)\\ \Delta G=-137.5+35.76\\\Delta G=-101.74\\\Delta G=Negative$

After calculating forΔG we found that the value ofΔG is negative and its value is -101.74KJ

For a reaction to be spontaneous the value of \Delta G \ must be negative .

As the ΔG for the given reaction is is negative so the reaction will be spontaneous in nature.

In this reaction since the entropy of reaction is positive and hence when we increase the temperature term then the overall term TΔS would become more positive and hence the value of ΔG would be less negative .

Hence the value of ΔG would become more positive with the increase in temperature.

So we found the value of ΔG to be -101.74KJ

4 0

4 years ago

Read 2 more answers

The following two compounds are constitutional isomers. Identify which of these is expected to be more acidic, and explain your

Vladimir [108]

Answer:

c. Compound 2 is more acidic because its conjugate base is more resonance stabilized

Explanation:

You haven't told us what the compounds are, so let's assume that the formula of Compound 1 is HCOCH₂OH and that of Compound 2 is CH₃COOH.

The conjugate base of 2 is CH₃COO⁻. It has two important resonance contributors, and the negative charge is evenly distributed between the two oxygen atoms.

CH₃COOH + H₂O ⇌ CH₃COO⁻ + H₃O⁺

The stabilization of the conjugate base pulls the position of equilibrium to the right, so the compound is more acidic than 1.

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3 years ago

A student is asked to convert measurements from liters to milliliters and from milliliters to liters. His answers are shown in b

kirza4 [7]

The answer is 3.6L=360mL

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3 years ago

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The chemical formula for copper (II) phosphate is Cu3(PO4)2. What is the charge on each copper ion?

mrs_skeptik [129]

3+ because I just know it 8757890

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3 years ago

How does the compound shown in part 5a of the transparency differ from the elements that comprise it?

Tresset [83]

<span>A compound is ''composed'' of elements. The periodic table is made up of elements. Atoms makes up elements and elements when reacted together make compounds. Na+ and Cl- makes NACL....salt. a compound</span>

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4 years ago