What pressure will be necessary to compress 2 liters of a gas at 1 atm to a volume of 0.05 liters if the temperature remains con
1 answer:
<h3>Answer:</h3>
40 atm
<h3>Explanation:</h3>- According to Boyle's law, the pressure and the volume of a fixed mass of a gas are inversely proportional at constant absolute temperature.
- That is;
- At varying pressure and volume,
P1V1 =P2V2
In this case,
Initial volume, V1 = 2 L
Initial pressure, P1 = 1 atm
New volume, V2 = 0.05 L
We are required to calculate the new pressure,
Rearranging the formula;
P2 = P1V1 ÷ V2
= (1 atm × 2L) ÷ 0.05 L
= 40 atm
Therefore, the pressure required is 40 atm
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<u>Answer:</u> The cell voltage of the given reaction is 1.86 V
<u>Explanation:</u>
The given chemical equation follows:
<u>Oxidation half reaction:</u> ( × 2)
<u>Reduction half reaction:</u> ( × 3)
Oxidation reaction occurs at anode and reduction reaction occurs at cathode.
To calculate the of the reaction, we use the equation:
Putting values in above equation, we get:
To calculate the EMF of the cell, we use the Nernst equation, which is:
where,
= electrode potential of the cell = ? V
= standard electrode potential of the cell = +1.82 V
n = number of electrons exchanged = 2
R = Gas constant = 8.314 J/mol Kl
T = temperature =
F = Faraday's constant = 96500
Putting values in above equation, we get:
Hence, the cell voltage of the given reaction is 1.86 V
Answer : The formula unit of compound will be,
Explanation :
As we know that one atom of oxygen contains (2-) charge and one atom of lead contains (4+) charge. So, to balance the of charges of lead, the 2 oxygen atoms combine with the 1 lead atom. Thus, the compound formed will be, .
That means, when combine with oxygen that is,
, it gives
by the criss-cross method.
Criss cross method : It is a method of determining the chemical formula.
The formula unit is a shown below.
