QUESTION 11 Which of the follo
QUESTION 11
-
Which of the following is a statement of the principle of Hess’slaw?
If a reaction is carried out in a series of steps, the ΔH forthe reaction will equal the product of the enthalpy changes for theindividual steps – that is the multiplication of the enthalpychanges for the individual reactions you have manipulated.
The ΔH for a process in the forward direction is equal to the ΔHfor the process in the reverse direction.
The ΔH for a process in the forward direction is equal inmagnitude and opposite in sign to the ΔH for the process in thereverse direction.
If a reaction is carried out in a series of steps, the ΔH forthe reaction will equal the sum of the enthalpy changes for theindividual steps – that is the addition of the enthalpy changes forthe individual reactions you have manipulated.
The ΔH of a reaction depends on the physical states of thereactants and products.
QUESTION 12
-
A coffee cup calorimeter is usually used for determining:
the heat of combustion of gaseous reactions
the molar heat capacity of pure elements
the heat of reaction of aqueous reactions
the calories in food samples
the heat capacity of solid samples
Answer:
Answer for question 11 is
The prinicple of Hess’s law is
If a reaction is carried out in a series of steps, the delta Hfor the reaction will equal to the sum of the enthalpy changes forthe individual steps, that is the addition of the enthalpy changesfor the inidvidual reactions you have manipulated.
Answer for question 12 is
A coffee cup calorimeter is usually used to determine the theheat of reaction of aqueous reactions.
"Our Prices Start at $11.99. As Our First Client, Use Coupon Code GET15 to claim 15% Discount This Month!!"
