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3 years ago

C12H22O + 11 H2SO4 → 12 C + 11 H2SO4 + 11 H2O.

Chemistry

1 answer:

Ymorist [56]3 years ago

7 0

Answer:

Yes

Explanation:

Chemical equation.

C₁₂H₂₂O₁₁ + 11H₂SO₄ → 12C + 11H₂SO₄ + 11H₂O

The sulfuric acid is used as a catalyst in the given reaction. Sucrose is break down into individual atoms carbon, hydrogen and oxygen.

Oxygen and hydrogen are combine to form water. The heat is released during the reaction and it is exothermic reaction. we can say that heat is given off because it is exothermic while in endothermic heat is taking by the substance.

Exothermic reaction:

The type of reactions in which energy is released are called exothermic reactions.

In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.

For example:

Chemical equation:

C + O₂ → CO₂

ΔH = -393 Kj/mol

it can be written as,

C + O₂ → CO₂ + 393 Kj/mol

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When 4.21 grams of potassium hydroxide are added to 250 mL of water in a coffee cup calorimeter, the temperature rises by 4.14°C

Schach [20]

Answer:

The molar heat of solution of potassium hydroxide = 57.7 kJ /mol

Explanation:

<u>Step 1:</u> Data given

Mass of potassium hydroxide = 4.21 grams

Volume of water = 250 mL

Temperature rise = 4.14 °C

Density = 1g/mL

Specific heat = 4.184 J/g°C

<u>Step 2:</u> Calculate the heat absorbed by water

q = m*c*ΔT

⇒ with m = the mass of water = 250 grams

⇒ with c= the specific heat of the solution = 4.184 J/g°C

⇒ with ΔT = 4.14 °C

q = 250 * 4.184*4.14 = 4330.4 J

<u>Step 3:</u> Calculate moles of KOH

Moles KOH = Mass KOH / Molar mass KOH

Moles KOH = 4.21 grams / 56.106 g/mol

Moles KOH = 0.075 moles

<u>Step 4:</u> Calculate molar heat of solution

4330.4 J / 0.075 moles = 57738.7 j/mol = 57.7 kJ /mol

(Note that the enthalpy change for the reaction is negative because the reaction is exothermic)

The molar heat of solution of potassium hydroxide = 57.7 kJ /mol

6 0

4 years ago

How many moles are in 4.35 X 1024 atoms of Iron (Fe)?

Naya [18.7K]

Answer:

<h3>The answer is 7.23 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{4.35 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 7.225913...$

We have the final answer as

<h3>7.23 moles</h3>

Hope this helps you

3 0

3 years ago

Balance these scientific equations:

ivanzaharov [21]

Answer:

1) MgO + 2HBr -> MgBr2+H2O

2)2N2+5O2->2N2O5

3)C2H4+2O2->CO2+2H2O

4)Fe+2HCl->FeCl2+H2

7 0

3 years ago

A reaction will be spontaneous at all temperatures if the reaction???

lisabon 2012 [21]

D is endothermic and

6 0

3 years ago

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emmainna [20.7K]

Answer:

Your answer will be (D).

Hope this helps!

7 0

3 years ago

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