Answer: The given reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.
Explanation:
We know that relation between free energy and enthalpy is as follows.
As in the given drawing, solid is converting into gas. This means that there is occurring an increase in entropy of the system. This also means that the enthalpy change will also be positive.
Free energy change is negative (spontaneous) at high temperature and free energy change is positive at low temperature.
Hence, we can conclude that the given reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.
Answer: The new volume is 544 L
Explanation:
To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
Thus the new volume is 544 L
<span>Chemical change is any change that results in the formation of new chemical substances. </span>
Answer:
0.716
Explanation:
First, write the balanced equation:
3 H2CO3 + 2 Fe(OH)3 ----> Fe2(CO3)3 + 6 H2O
Second, go from the molarity of H2CO3 to liters of Fe(OH)3
(Pull mole ratio from balanced equation)
1.22/1L x 0.0880/1 x 3molH2CO3/2molFe(OH)3 x 1/0.225L
Use calculator, and you end up with 0.7157333
Round to 0.716
