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4 years ago

HELP!!

Chemistry

1 answer:

NeX [460]4 years ago

7 0

The given reaction is:

H2(g) + CO2(g) → H2O(g) + CO(g)

i.e.

H-H + O=C=O → H-O-H + C≡O

Reaction enthalpy (ΔH) is given as:

ΔH = ∑ΔH(Bonds broken) + ∑ΔH(Bonds formed)

= [1*ΔH(H-H) + 2*ΔH(C=O)] + [2*ΔH(O-H) + 1*ΔH(C≡O)]

=[+436 +2(799)] + [2(-463) +1(-1072)] = 36 kJ/mol

The enthalpy change for the given reaction is 36 kJ/mol

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Nitrogen dioxide reacts with carbon monoxide to produce nitrogen monoxide and carbon dioxide. NO2(g) + CO(g) ⟶ NO(g) + CO2(g) A

Naya [18.7K]

Answer: The rate law for the reaction is $\text{Rate}=k[NO_3][CO]$

Explanation:

Rate law is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

In a mechanism of the reaction, the slow step in the mechanism determines the rate of the reaction.

For the given chemical reaction:

$NO_2(g)+CO(g)\rightarrow NO(g)+CO_2(g)$

The intermediate reaction of the mechanism follows:

Step 1: $2NO_2(g)\rightleftharpoons NO_3(g)+NO(g);\text{ (fast)}$

Step 2: $NO_3(g)+CO(g)\rightarrow NO_2(g)+CO_2(g);\text{(slow)}$

As, step 2 is the slow step. It is the rate determining step

Rate law for the reaction follows:

$\text{Rate}=k[NO_3][CO]$

Hence, the rate law for the reaction is written above.

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4 years ago

Nuclear energy is made from the element carbon. True or false

asambeis [7]

True Nuclear energy is made from the element carbon

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3 years ago

How many grams are in 2.3 x 10^-4 moles of Ca3(PO4)2

OLEGan [10]

Molar mass

Ca₃(PO₄)₂ = 310 g/mol

1 mole -------------------> 310 g
2.3x10⁻⁴ mole ---------> ?

m = 2.3x10⁻⁴ * 310 / 1

m = 0.0713 g

hope this helps!

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3 years ago

Chemistry is the study of all of the following EXCEPT

ValentinkaMS [17]

B - projectile motion

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Would the plastic have a positive charge, negative charge, or no charge? *

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~Dreamer1331~

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2 years ago