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3 years ago

What is the best way to reduce the activation energy?

Chemistry

1 answer:

Ksivusya [100]3 years ago

5 0

Answer:

The method of hurrying up a reaction by decreasing its activation energy is called as catalysis, and the circumstance that's added to reduce the activation energy is termed as the catalyst.

Explanation:

Organic catalysts are named as enzymes. Enzymes are protein particles in cells which act as catalysts. Enzymes are proteid particles in groups which act as catalysts. Enzymes rush up biochemical effects in the thing but do not become used up in the method. Nearly all biochemical effects in living things require enzymes. Among an enzyme, biochemical effects go extremely quicker than they would without the enzyme.

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Use the following information S(s)+O2(g)→SO2(g), ΔH∘ = -296.8kJ SO2(g)+12O2(g)→SO3(g) , ΔH∘ = -98.9kJ to calculate ΔH∘f for H2SO

Irina-Kira [14]

Answer : The enthalpy of formation of $H_2SO_4$ is, -812.4 kJ/mole

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The formation of $H_2SO_4$ will be,

$S+H_2+2O_2\rightarrow H_2SO_4$ $\Delta H_{formation}=?$

The intermediate balanced chemical reaction will be,

(1) $S+O_2\rightarrow SO_2$ $\Delta H_1=-298.2$

(2) $SO_2+\frac{1}{2}O_2\rightarrow SO_3$ $\Delta H_2=-98.2$

(3) $SO_3+H_2O\rightarrow H_2SO_4$ $\Delta H_3=-130.2$

(4) $H_2+\frac{1}{2}O_2\rightarrow H_2O$ $\Delta H_4=-285.8$

Now adding all the equations, we get the expression for enthalpy of formation of $H_2SO_4$ will be,

$\Delta H_{formation}=\Delta H_1+\Delta H_2+\Delta H_3+\Delta H_4$

$\Delta H=(-298.2)+(-98.2)+(-130.2)+(-285.8)$

$\Delta H=-812.4kJ/mol$

Therefore, the enthalpy of formation of $H_2SO_4$ is, -812.4 kJ/mole

3 0

3 years ago

How many moles of Fe contains 3.41 x 1023 Fe atoms?

Liula [17]

Answer:

Explanation:

28个

8 0

3 years ago

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Iodine is blue-black, crystalline, and solid. It sublimes to a violet-colored gas and reacts with aluminum and many other metals

Pepsi [2]

Answer:

blue-black PHYSICAL PROPERTY
crystalline PHYSICAL PROPERTY
solid PHYSICAL PROPERTY
sublimes to a violet-colored gas PHYSICAL PROPERTY
reacts with aluminum and many other metals CHEMICAL PROPERTY

Explanation:

Chemical properties are visible through chemical reactions, in which the chemical identity changes to form new substances. On the other hand, physical properties are evident without a change in the identity of a substance.

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<em>Which of these five properties are physical and which are chemical?</em>

blue-black PHYSICAL PROPERTY
crystalline PHYSICAL PROPERTY
solid PHYSICAL PROPERTY
sublimes to a violet-colored gas PHYSICAL PROPERTY
reacts with aluminum and many other metals CHEMICAL PROPERTY

4 0

3 years ago

At what distance from Earth are weather maps drawn?

-Dominant- [34]

Answer:

10^5 meters

Explanation:

4 0

3 years ago

What voltage will produce 3 A through a circuit that has 15<br> ohms of resistance?

lozanna [386]

Answer:

5 ohms of resistance

Explanation:

15/3=5

6 0

3 years ago

Read 2 more answers