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Aleksandr-060686 [28]
3 years ago
7

Which parameter is indicative of how far and in what direction a reaction will progress?

Chemistry
1 answer:
nekit [7.7K]3 years ago
6 0

Answer:

Option b, The change in free energy of the reaction (ΔG)

Explanation:

Gibbs free energy is a measure of amount of usable energy in the system.

It is related with enthalpy (H), entropy (S) and temprature (T) as:

G = H - TS

The Gibbs free energy change (ΔG) provide spontaneity of a chemical reaction.

If ΔG is negative, then reaction is spontaneous that means reaction is moving towards forward direction.

If ΔG is positive, then reaction is non-spontaneous that means reaction is moving in backward direction.

If ΔG is zero, then reaction is at equilibrium.

Change in enthalpy only gives informtion about heat involed in a chemical reaction, it does not give information about direction of the reaction.

So, among the given options, option b is correct.

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A student combines 364.6 g of HCl with 80 g of NaOH in 5 L of water. What additional volume of H2O must be added to this mixture
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Answer:

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Explanation:

The reaction of HCl With NaOH is:

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By using molar mass of each reactant you can know how many moles will react, thus:

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As molarity, M is the ratio between moles and liters and you want a solution 0.1M having 8 moles of H⁺ you require:

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As the student combines the solution with 5L of water, you require

<h3>75L of additional water to have a pH 1 solution</h3>
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