Answer:
Average velocity of molecules is 20 m/s and root mean square velocity of molecules is 20.24 m/s
Explanation:
It is given that, eleven molecules have speeds 15,16,17,18,19,20,21,22,23,24,25 m/s. We have to calculate (1) average velocity (2) root mean square velocity of molecules.
Average velocity can be calculated as :
Root mean square velocity is given by :
Hence, this is the required solution.
Answer:
Explanation:
Hello,
The law of mass action, allows us to know the required amounts, thus, for this chemical reaction it is:
Now, we answer:
(a)
(b)
(c) Since no initial data is specified, we could establish the rate of the reaction as based of the law of mass action:
Thus, any of the available expressions are suitable to quantify the rate of the reaction.
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Answer : The enthalpy of reaction is, 67.716 KJ/mole
Explanation :
First we have to calculate the moles of and
.
Now we have to calculate the moles of AgCl formed.
The balanced chemical reaction will be,
As, 1 mole of react with 1 mole of
to give 1 mole of
So, 0.005 mole of react with 0.005 mole of
to give 1 mole of
The moles of AgCl formed = 0.005 mole
Total volume of the solution = 50.0 ml + 50.0 ml = 100.0 ml
Now we have to calculate the mass of solution.
Mass of the solution = Density of the solution × Volume of the solution
Mass of the solution = 1.00 g/ml × 100.0 ml = 100 g
Now we have to calculate the heat.
where,
q = heat
C = specific heat capacity =
m = mass = 100 g
= final temperature =
= initial temperature =
Now put all the given values in the above expression, we get:
Now we have to calculate the enthalpy of the reaction.
where,
= enthalpy of reaction = ?
q = heat of reaction = 338.58 J
n = moles of reaction = 0.005 mole
Now put all the given values in above expression, we get:
Conversion used : (1 KJ = 1000 J)
Therefore, the enthalpy of reaction is, 67.716 KJ/mole