Chemistry Two Exam Four Review

Which change has a positive Delta S?

• a

• b

• c

Answer explanation

more disorder/spreading out

Tags

NGSS.HS-PS3-4

• a

• b

• c

Mg(s)+Cl2(g)->MgCl2(s)

is Delta S negative or positive?

• Negative

• Positive

Answer explanation

negative so there is a decrease in entropy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

2H2S(g)+3O2(g)->2H20(g)+2SO2(g)

Is Delta S negative or positive?

• Positive

• Negative

2O3(g)->3O2(g)

Is Delta S negative or positive?

• Positive

• Negative

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

• A

• B

Answer explanation

This is because there are more arrangements B can have

Tags

NGSS.HS-PS3-4

• 6570 J/K

• 65.7 J/K

• 4380 J/k

• 43.8 J/K

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

• 72.3 J/K

• -49.6 J/K

• -72.3 J/K

• 49.6 J/K

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

• a. positive

  b. negative

  c. negative

  d. negative

• a. negative

  b. positive

  c. positive

  d. positive

• a. negative

  b. positive

  c. negative

  d. negative

• a. positive

  b. positive

  c. negative

  d. positive

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4