Answer:
The enthalpy of the reaction of the reaction asked in the question is 265.2 kJ.
Explanation:
...(1)
..(2)
...(3)
(1)+(2)
...(4)
On reversing the equation (4)we get (3):
The enthalpy of the reaction of the reaction asked in the question is 265.2 kJ.
The balanced chemical reaction is written as:
<span>3NO2 + H2O = 2HNO3 + NO
Assuming that the gases in this reaction are ideal gas, then we can use the conversion from L to moles which is 1 mol of ideal gas is equal to 22.4 L. We calculate as follows:
538 L NO2 ( 1 mol / 22.4L ) ( 1 mol NO / 3 mol NO2 ) ( 22.4 L / 1 mol ) = 179.33 L NO is produced</span>
Answer:-
Solution:- First of all we calculate the heat absorbed or released when the solute is added to the solvent. Here the solute is LiCl and the solvent is water.
To calculate the heat absorbed or released we use the formula:
q = heat absorbed or released
m = mass of solution
s = specific heat capacity
and = change in temperature
mass of solution = mass of solute + mass of solvent
mass of solution = 5.00 g + 100.0 g = 105.0 g
(note:- density of pure water is 1 g per mL so the mass is same as its volume)
= 33.0 - 23.0 = 10.0 degree C
s =
Let's plug in the values in the formula and calculate q.
q =
q = 4389 J
To calculate the enthalpy of solution that is we convert q to kJ and divide by the moles of solute.
moles of solute =
= 0.118 moles
q = = 4.389 kJ
=
Since the heat is released which is also clear from the rise in temperature of the solution, the sign of enthapy of solution will be negative.
So,
2000 mL is the answer because when going from grams to milligrams you move your decimal place to the right 3 times. So therefore it is 2000 mL.