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3 years ago

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Adam is trying to identify a solid. He places a small amount of the substance in an acid solution and observes whether or not a

reaction takes place. This test is based on a ___Radial____ property.

1 answer:

sp2606 [1]3 years ago

6 0

i dont tbh what you looking for

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N2(g) + O2(g) → NO(g) ΔHrxn = +90.3 kJ NO(g) + Cl2(g) → NOCl(g) ΔHrxn = –38.6 kJ What is the value of ΔHrxn for the decompositio

Ivanshal [37]

Answer : The value of $\Delta H_{rxn}$ is, -103.4 kJ

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 given main reaction is,

$2NOCl(g)\rightarrow N_2(g)+O_2(g)+Cl_2(g)$ $\Delta H=?$

The intermediate balanced chemical reaction will be,

(1) $\frac{1}{2}N_2(g)+\frac{1}{2}O_2(g)\rightarrow NO(g)$ $\Delta H_1=+90.3kJ$

(2) $NO(g)+\frac{1}{2}Cl_2(g)\rightarrow NOCl(g)$ $\Delta H_2=-38.6kJ$

Now reversing and multiplying by 2 of reaction 1 and 2 then adding all the equations, we get :

(1) $2NO(g)\rightarrow N_2(g)+O_2(g)$ $\Delta H_1=2\times (-90.3kJ)=-180.6kJ$

(2) $2NOCl(g)\rightarrow 2NO(g)+Cl_2(g)$ $\Delta H_2=2\times (+38.6kJ)=+77.2kJ$

The expression for $\Delta H_{rxn}$ will be,

$\Delta H=\Delta H_1+\Delta H_2$

$\Delta H=(-180.6)+(+77.2)$

$\Delta H=-103.4kJ$

Therefore, the value of $\Delta H_{rxn}$ is, -103.4 kJ

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IF SOMEONE HELP ME WITH THIS, I'll GIVE 100 POINTS! Create an organization structure for fictional elements. There are many ways

Vlad1618 [11]

Bruh you didn’t give 100 points tho

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3 years ago

Explain how passive and active transport are similar and how they are different.

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Answer:

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Explanation:

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When 0.22 mol of iron are allowed to react with an excess of chlorine gas how many

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the explanation N2+O2

answer is E

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Which of the following data tables correctly shows how temperature affects the reaction between sodium thiosulfate and hydrochlo

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a because as temperature increases, reaction rate increases.

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