Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?

Ans: The sign of the slope is negative

The free energy change (ΔG) is related to the equilibrium constant Kp as:

ΔG = -RTlnKp (1)

Also, ΔG = ΔH-TΔS (2)

therefore,

-RTlnKp = ΔH-TΔS

ln(Kp) = -ΔH/R(1/T) + ΔS/R

Thus, a plot of lnKp Vs 1/T will give a straight line with a negative slope such that:

Slope = -ΔH/R

Intercept = ΔS/R

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.