Homework Answers
In a redox reaction , the element that loses electron/s, is getting oxidised .Hence it acts as a reducing agent itself.Conversely, if an element gains electrons, it is getting reduced. Hence it acts as an oxidising agent.
Therefore , In 1) Option E is correct as Mg is getting oxidised here by losing two electrons and Cu2+ is getting reduced.
2)Similarly Option A is correct as Zn gets oxidised due to addiion of an electronegative radical to it and is hence a reducing agent.Removal of the electronegative radical makes CuSO4 the oxidising agent.
3)The sum total of charges of each atom of the compound equals to the charge of the compound.
Thus, in Cr2O72- , Charge of Cr *2 + Charge of Oxygen * 7= -2
Thus oxidation number of Cr = +6
4) Similarly, in KMnO4, Charge of K + Charge of Mn+ Charge of O * 4 =0
Thus oxidation number of Mn = + 7
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7) In the following reaction, Mg(s) + Cu²+ (aq) → Mg2+ (aq) + Cu (s): A)...
QUESTION 4 In the following reaction, Mg(s) + + Cu2+ (aq) → Mg2+ *(aq) + Cu(3)...
QUESTION 4 In the following reaction, Mg(s) + + Cu2+ (aq) → Mg2+ *(aq) + Cu(3) Mg is the reducing agent and Cu is the oxidizing agent. O Cu is the reducing agent and Mg2+ is the oxidizing agent. Mg2+ is the reducing agent and Cu is the oxidizing agent. O Mg is the reducing agent and Cu2+ is the oxidizing agent. is the reducing agent and Mg is the oxidizing agent. O QUESTION 5 Which of the following diatomic...
a.) Cu 2 b.) Mg +29) +2e- → Cus) + 2e- → Mg(s) (aq) c.) Mg,...
a.) Cu 2 b.) Mg +29) +2e- → Cus) + 2e- → Mg(s) (aq) c.) Mg, → Mgt? (aq) + 2e- → Cus+ 2e- d.) Cu (aq) the reduction half reaction is a.) Cut2 +2e- → Cus) b.) Mg? (aq) + 2e- → Mgie c.) Mg» → Mg(aq) + 2e- → + 2e- d.) Cu (aq) Cuis) is being oxidized a.) Cu? (aq) b.) Mg(s) c.) Mg (aq) d.) Cu(s) RING 2018 is being reduced a.) Cu 2 (aq) b.)...
5. Which is the reducing agent in the following redox reaction? CuSO4 + Zn - >...
5. Which is the reducing agent in the following redox reaction? CuSO4 + Zn - > Cu + ZnSO. a) CuSO4 b) Zn c) ZnSO4 d) Cu 6. The oxidation number of manganese (Mn) in Mno, is; a) + 8 - 6 - 7 c) + 7 d) -8 7. Which of the following is insoluble in water? a) Ca(NO3) 2 b ) NaSO4 c) NH4Cl d) AgCI 8. What are the spectator ions in the reaction below? Ca(NO3)2 +...
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the...
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? yes e(s) + O2(g) → CO2(g) reducing agent oxidizing agent redox reaction? O yes no Cuso,a) + Zn(s) -^ ZnSO4(a) Cu(s) reducing agent: oxidizing agent: redox reaction? yes no 2C1, (g) Sn(s) SnCls) reducing n agent: oxidizing agent
Problem Page Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction....
Problem Page Decide whether
each chemical reaction in the table below is an oxidation-reduction
("redox") reaction. If the reaction is a redox reaction, write down
the formula of the reducing agent and the formula of the oxidizing
agent.
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? yes no 2H, $...
help with these please Half-reaction E° (V) Br26) + 2e —> 2Br (aq) 1.080V Ca2+(aq) +...
help with these please
Half-reaction E° (V) Br26) + 2e —> 2Br (aq) 1.080V Ca2+(aq) + 2e —— Cd) 0.403V Zn2+ (aq) + 2e —— Zn(0.763V (1) The strongest oxidizing agent is: enter formula (2) The weakest oxidizing agent is: (3) The weakest reducing agent is: (4) The strongest reducing agent is: (5) Will Br2(1) oxidize Zn(s) to Zn?"(aq)? O (6) Which species can be oxidized by Ca2+(aq)? If none, leave box blank. Consider the following half-reactions: Half-reaction E° (V)...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq)...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq) + H2 (9) Individual oxidation numbers: a. Assign oxidation numbers to each element as indicated by the boxes in H SO, Zn in ZnSOS in Znso. O in ZnSO, and H in H2) (6 pts) b. Write the total ionic equation for the reaction above. (9 pts) ndicated by the boxes above. (i.e. Zn in Zn(s), H c. Write the net ionic equation for...
Cu(s) + 4HNO3 --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Cu2+(aq) + 4NH3(aq) --> [Cu(NH3)4]2+(aq) a. For...
Cu(s) + 4HNO3 --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Cu2+(aq) + 4NH3(aq) --> [Cu(NH3)4]2+(aq) a. For each reaction, identify the oxidation number for each of the elements on both sides of the equation. b. Which of the reactions above is a redox reaction? Explain. c. Identify the element that is being reduced and the one that is being oxidized in the redox reaction. d. Identify the strong oxidizing agent and strong reducing agent in the redox reaction.
how to balance redox reaction equation i need to know what the oxidizibg agent and reducing...
how
to balance redox reaction equation
i
need to know what the oxidizibg agent and reducing agent are for
these
Reactants Products Observations Fe sou Mg So, e CuSO4 Zn FeSO4 | ZnSO4 | Zn soy No reaction Slow Bubbles light yellow I color charge (c | Fizzing No reaction 114 504 MgSO4 it sou Fe Feso 4 Hb so Fizzing Zn soy No reaction Fizzing Ibubbi No reaction ZnSO4 Mg Sot O Naso Cu Na Sou Mg uso4 Fe...
HNO3 (aq) + Cu (s) + H2(g) + CuNO3 (aq) •Identify what type of reaction it...
HNO3 (aq) + Cu (s) + H2(g) + CuNO3 (aq) •Identify what type of reaction it is: precipitation, redox or acid-base. •Balance the above equation. •Write the balanced net ionic equation. d. Indicate the element that has been oxidized and the one that has been reduced. You should also identify the oxidation number (ox #) of each before and after the process. Identify the reducing agent and the oxidizing agent. Element Oxidized: Ox # Reactant: Ox # Product: Element Reduced:...
QUESTION 4 In the following reaction, Mg(s) + + Cu2+ (aq) → Mg2+ *(aq) + Cu(3) Mg is the reducing agent and Cu is the oxidizing agent. O Cu is the reducing agent and Mg2+ is the oxidizing agent. Mg2+ is the reducing agent and Cu is the oxidizing agent. O Mg is the reducing agent and Cu2+ is the oxidizing agent. is the reducing agent and Mg is the oxidizing agent. O QUESTION 5 Which of the following diatomic...
a.) Cu 2 b.) Mg +29) +2e- → Cus) + 2e- → Mg(s) (aq) c.) Mg, → Mgt? (aq) + 2e- → Cus+ 2e- d.) Cu (aq) the reduction half reaction is a.) Cut2 +2e- → Cus) b.) Mg? (aq) + 2e- → Mgie c.) Mg» → Mg(aq) + 2e- → + 2e- d.) Cu (aq) Cuis) is being oxidized a.) Cu? (aq) b.) Mg(s) c.) Mg (aq) d.) Cu(s) RING 2018 is being reduced a.) Cu 2 (aq) b.)...
5. Which is the reducing agent in the following redox reaction? CuSO4 + Zn - > Cu + ZnSO. a) CuSO4 b) Zn c) ZnSO4 d) Cu 6. The oxidation number of manganese (Mn) in Mno, is; a) + 8 - 6 - 7 c) + 7 d) -8 7. Which of the following is insoluble in water? a) Ca(NO3) 2 b ) NaSO4 c) NH4Cl d) AgCI 8. What are the spectator ions in the reaction below? Ca(NO3)2 +...
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? yes e(s) + O2(g) → CO2(g) reducing agent oxidizing agent redox reaction? O yes no Cuso,a) + Zn(s) -^ ZnSO4(a) Cu(s) reducing agent: oxidizing agent: redox reaction? yes no 2C1, (g) Sn(s) SnCls) reducing n agent: oxidizing agent
Problem Page Decide whether
each chemical reaction in the table below is an oxidation-reduction
("redox") reaction. If the reaction is a redox reaction, write down
the formula of the reducing agent and the formula of the oxidizing
agent.
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? yes no 2H, $...
help with these please
Half-reaction E° (V) Br26) + 2e —> 2Br (aq) 1.080V Ca2+(aq) + 2e —— Cd) 0.403V Zn2+ (aq) + 2e —— Zn(0.763V (1) The strongest oxidizing agent is: enter formula (2) The weakest oxidizing agent is: (3) The weakest reducing agent is: (4) The strongest reducing agent is: (5) Will Br2(1) oxidize Zn(s) to Zn?"(aq)? O (6) Which species can be oxidized by Ca2+(aq)? If none, leave box blank. Consider the following half-reactions: Half-reaction E° (V)...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq) + H2 (9) Individual oxidation numbers: a. Assign oxidation numbers to each element as indicated by the boxes in H SO, Zn in ZnSOS in Znso. O in ZnSO, and H in H2) (6 pts) b. Write the total ionic equation for the reaction above. (9 pts) ndicated by the boxes above. (i.e. Zn in Zn(s), H c. Write the net ionic equation for...
how
to balance redox reaction equation
i
need to know what the oxidizibg agent and reducing agent are for
these
Reactants Products Observations Fe sou Mg So, e CuSO4 Zn FeSO4 | ZnSO4 | Zn soy No reaction Slow Bubbles light yellow I color charge (c | Fizzing No reaction 114 504 MgSO4 it sou Fe Feso 4 Hb so Fizzing Zn soy No reaction Fizzing Ibubbi No reaction ZnSO4 Mg Sot O Naso Cu Na Sou Mg uso4 Fe...
HNO3 (aq) + Cu (s) + H2(g) + CuNO3 (aq) •Identify what type of reaction it is: precipitation, redox or acid-base. •Balance the above equation. •Write the balanced net ionic equation. d. Indicate the element that has been oxidized and the one that has been reduced. You should also identify the oxidation number (ox #) of each before and after the process. Identify the reducing agent and the oxidizing agent. Element Oxidized: Ox # Reactant: Ox # Product: Element Reduced:...
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