A)In a chemical reaction two gases combine to form a solid. What do you expect for the sign of ΔS?
S is higher in gases than solids
B) For which of the following processes does the entropy of the system increase? (Select all that apply.)
-> alignment of iron filings in a magnetic field
S is higher before alignment
-> the melting of ice cubes at 10°C and 1 atm pressure
S is higher in liquids than in solids
-> the dissolution of HCl(g) in water to form concentrated hydrochloric acid
S is higher in gases than in liquids
-> the reaction of hydrogen gas with oxygen gas to form water vapor
S is higher in gases than in liquids.
->separating a mixture of N2 and O2 into two separate samples, one that is pure N2 and one that is pure O2
A)In a chemical reaction two gases combine to form a solid. What do you expect for the sign of ΔS?
B) For which of the following processes does the entropy of the system increase? (Select all that apply.)
-> alignment of iron filings in a magnetic field
-> the melting of ice cubes at 10°C and 1 atm pressure
-> the dissolution of HCl(g) in water to form concentrated hydrochloric acid
-> the reaction of hydrogen gas with oxygen gas to form water vapor
->separating a mixture of N2 and O2 into two separate samples, one that is pure N2 and one that is pure O2
4 answers
dS increases if pure N2 and pure O2 are mixed.
thanx!!
A,E INCREASES
B,C,D DECREASES
B,C,D DECREASES