Answer:
i) Buffer absorbs H^+ and OH^- ions preventing large changes in pH when small amounts of acid or base is added but when large amounts of acid or base is added there will be a change in pH
ii) absorption of liquid is related to a chemical reaction for a buffer system but it is not related a chemical reaction for a proton( H ) sponge.
Explanation:
<u>i) Buffer like a proton ( H ) sponge </u>
Buffer absorbs H^+ and OH^- ions preventing large changes in pH when small amounts of acid or base is added but when large amounts of acid or base is added there will be a change in pH
The pH of a Buffer follows the Henderson-Hasselbach model
pH = pKa + Log ([A-]/[HA])
when base is added
HA + OH^- -------> A- + H2O
when acid is added
A^- + H^+ ---------> HA
<u>ii) Buffer not like a proton ( H ) sponge</u>
absorption of liquid is related to a chemical reaction for a buffer system but it is not related a chemical reaction for a proton( H ) sponge.
Answer:
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Explanation:
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N(Cu)=m(Cu)/M(Cu)
n(H₂O)=4n(Cu)/3
n(H₂O)=4m(Cu)/{3M(Cu)}
n(H₂O)=4*98.6g/{3*63.5g/mol}=2.0703≈2.1 mol
n(H₂O)=2.1 mol
The total pressure in the container after the three gases are mixed is 6 atm and the partial pressure of He is 1 atm.
<h3>What is Dalton's Law of Partial Pressure ?</h3>
According to Dalton's Law of Partial Pressure , the pressure exerted by a mixture of gas is equal to the sum of the partial pressure of the gases in the mixture.
P(total) = p₁ +p₂+p₃+.....
As the volume of the containers are same and the
n = 1*5/RT for Helium
n = 2*5 /RT for Neon
n= 3*5/RT for Argon
Mole fraction = moles of the element/Total moles
Moles fraction of Helium is
= 1/6
Total Pressure in the container = 1 + 2 +3 = 6 atm
The partial pressure of Helium will be
=Mole fraction * Total pressure
=(1/6)*6 atm
= 1 atm , as the volume is same the temperature is same , the pressure will also be same.
To know more about Dalton's Law
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