3. compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ___.
2 answers:
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Answer : The pressure of hydrogen gas is 8.96 atm.
Explanation :
The given balanced chemical reaction is:
From the balanced chemical reaction we conclude that,
As, 2 moles of Al react to give 3 moles of gas
So, 4.50 moles of Al react to give moles of
gas
Now we have to calculate the moles of gas when percent yield is 75.4.
Now we have to calculate the pressure of gas.
Using ideal gas equation :
PV = nRT
where,
P = Pressure of hydrogen gas = ?
V = Volume of the hydrogen gas = 14.0 L
n = number of moles of hydrogen gas = 5.09 moles
R = Gas constant =
T = Temperature of hydrogen gas = 300 K
Putting values in above equation, we get:
Therefore, the pressure of hydrogen gas is 8.96 atm.
The cell notation for the given voltaic cell is as follows
Al(s) | Al³⁺(aq) || Cr³⁺ (aq) | Cr(s)
<h3>What is a voltaic cell?</h3>The device in which electrons are transferred through an external source is known as a voltaic cell.
The electron flow of a Voltaic cell allows redox reactions to produce energy in the form of electricity.
It converts the energy of spontaneous redox reaction into electrical energy
An anode, a cathode, and a salt bridge are all parts of a voltaic cell's setup. The salt bridge serves to neutralize the system.
To write the cell notation, identify the oxidation and reduction reactions.
At the anode, oxidation takes place
At the cathode, reduction takes place
While writing cell notation, the anode is written on the left, and the cathode is written on the right
A single vertical line differentiates between the phases and a double vertical line represents the salt bridge.
Now, write the cell notation of the given Voltaic cell
Al(s) | Al³⁺(aq) || Cr³⁺ (aq) | Cr(s)
Learn more about Voltaic cells:
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