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Elena-2011 [213]
2 years ago
14

A gas has a volume of 6.00 liters at a temperature of 300 K and a pressure of 1.00 atm what is the volume of the gas in liters a

t a temperature of 600 K and a pressure of 3.00 atm
Chemistry
1 answer:
Yanka [14]2 years ago
4 0

Answer:

V₂ = 4.00 L

Explanation:

Given that:

Volume (v1) = 6.00 L

Temperature (T1) = 300 K

Pressure (P1) = 1.00 atm

VOlume (V2) = unknown???

Temperature (T2) = 600 K

Pressure (P2) = 3.00 atm

Using combined gas law equation:

\dfrac{P_1V_1}{T_1}= \dfrac{P_2V_2}{T_2}

\dfrac{1 \times 6}{300} = \dfrac{3 \times V_2}{600}

\dfrac{1}{50} = \dfrac{1 \times V_2}{200}

200 = 50V₂

V₂ = 200/50

V₂ = 4.00 L

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B. ΔHreaction = ΔH°f reactants- ΔH°f products

Explanation:

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For example, in ΔH°f of H₂O, the equation is:

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The constituent elements with ΔH°f = 0 are H₂(g) and O₂(g).

Now, using Hess's law, you can sum the ΔH°f of substance in a reaction as, for example:

NaOH + HCl → H₂O + NaCl. ΔHr

The ΔH°f for each substance in the reaction is:

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HCl: 1/2H₂ + 1/2Cl₂ → HCl <em>(2)</em>

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NaCl: Na + 1/2Cl₂ → NaCl <em>(4)</em>

The algebraic sum of (3) + (4) is -(ΔH°f reactants):

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In the example, we obtain this relationship that can be expanded for all reactions. Thus, right answer is:

<h3>B. ΔHreaction = ΔH°f reactants- ΔH°f products</h3>

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