We are going to use Henry's law:
when C1/P1 = C2/P2
at a constant temperature.
and when the C1 and C2 are the concentration of the gases ( the solubility)
and P1 and P2 is the Pressure 1 and pressure 2
and when 760 mmHg = 1 atm
so, by substitution:
1.6 g/L / 1 atm = C2 /2.5 atm
∴C2 = 1.6g/L *2.5atm /1 atm
= 4 g/L
∆H (enthalpy change) should be positive because you would need energy to break the oxygen- oxygen bond to generate 2 molecules of Oxygen .
<h3>What is enthalpy change ?</h3>
It is type of energy or the measurement of energy . The quantity of enthalpy equals to the total content of heat of a system .
It can be defined as the sum of total internal energy and the product of volume and pressure .
It describes the system is endothermic or exothermic .
<h3>What is exothermic reaction? </h3>
It is a reaction in which energy is released from the system in the form of heat and light.
in this loss of energy occurs. energy liberated from system to surrounding. the enthalpy change i.e. ∆H<0.
<h3>
What is endothermic reaction? </h3>
It is a reaction in which energy is absorbed from the surrounding to the system. in this gain of energy occurs. the enthalpy change i.e ∆H>0.
Learn more about enthalpy change here:
brainly.com/question/14047927
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Answer:
Moles of NaCl formed is 6.0 moles
Explanation:
We are given the equation;
2 Na(s) + Cl₂(g) → 2 NaCl(s)
- Moles of Na is 6.0 moles
- Moles of Cl₂ is 4.0 moles
From the reaction;
2 moles of sodium reacts with 1 mole of chlorine gas to form 2 moles of NaCl
In this case;
6 moles of Na would require 3 moles of Cl₂, this means that chlorine gas is in excess.
Thus, the rate limiting reagent is sodium.
But, 2 moles of sodium reacts to form 2 moles of NaCl
Therefore;
Moles of NaCl = Moles of Na
= 6.0 moles
Thus, moles of sodium chloride produced is 6.0 moles
