Hey! I tried doing problems 1-3 and i keep getting the wrong answer. Can you ple

Question

Hey! I tried doing problems 1-3 and i keep getting the wrong answer. Can you please show me how you got your answer so I can learn where I messed up. Thank you and please do them all (: QUESTION 1 1 points What is the oxidation state of copper before and after the reaction below? 2NO3 (aq) 8H (aq) +3cueso -3cu2+(ac) +2NO(g) 4H2000 G I Before the reaction? After the reactor? QUESTION 2 1 points save Answer Select all that appy for the Cl anion in the reaction below. oxidized O Reduced O oxidizing Agent O Reducing Agent QUESTION 3 1 points What is the oxidation state of sulfur before and after the reaction below? Before the reaction? After the reaction? G-5

Explanation / Answer

Q1

Copper before and after reaction

initially, it is solid, so for copper, it must have a ZERO state, since it is "pure"

after reation, it has a 2+ charge, meaning it went for m0 to +2, it lost 2 electrons, so the charge is +2 (oxidation number)

Q2

Cl- goes from -1 to 0 (in Cl2)

so it lsot 1 electron, it must be OXIDIZED

it is also acting as the reducing agent, since it helps to reduce the ClO4-

Q3

state of S of reaction:

SO3-2

so

S + 3(-2) = -2

S -6 = -2

S = -2+6 = +4

initially, S has +4 charge

after reaction:

SO4-2

S + 4*(-2) = -2

S = -2 + 8

S = +6

it then loses electrons to form an oxidation state of 6

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---