Question

Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of H2O is: H2S + HNO3 → S + NO (acidic solution) 2. What is the reducing agent in the unbalanced reaction? Zn(s) + (aq) → Re(s) + Zn2+(aq) (acidic solution) Zn Zn2+ Re 3. When the following redox equation is balanced with smallest whole-number coefficients, the sum of all coefficients will be _____. Bi(OH)3(s) + (aq) → (aq) + Bi(s) (basic solution) 10 12 13 14 None of these choices is correct. 4. Consider the following balanced redox reaction: Mn2+(aq) + (aq) + 2H2O(l) → MnO2(s) + 4H+(aq) + (aq). Which of the following statements is true? Mn2+(aq) is the oxidizing agent and is reduced. Mn2+(aq) is the oxidizing agent and is oxidized. Mn2+(aq) is the reducing agent and is oxidized. Mn2+(aq) is the reducing agent and is reduced. Manganese does not change its oxidation number in this reaction.

          Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of H2O is:

H2S + HNO3 → S + NO (acidic solution)

2. What is the reducing agent in the unbalanced reaction?

Zn(s) + (aq) → Re(s) + Zn2+(aq) (acidic solution)

Zn
Zn2+
Re

3. When the following redox equation is balanced with smallest whole-number coefficients, the sum of all coefficients will be _____.

Bi(OH)3(s) + (aq) → (aq) + Bi(s) (basic solution)

10
12
13
14
None of these choices is correct.

4. Consider the following balanced redox reaction:

Mn2+(aq) + (aq) + 2H2O(l) → MnO2(s) + 4H+(aq) + (aq).

Which of the following statements is true?

Mn2+(aq) is the oxidizing agent and is reduced.
Mn2+(aq) is the oxidizing agent and is oxidized.
Mn2+(aq) is the reducing agent and is oxidized.
Mn2+(aq) is the reducing agent and is reduced.
Manganese does not change its oxidation number in this reaction.

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Added by Crystal R.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Suman K

05/19/2022

Step 1

The balanced equation is: 3H2S + 4HNO3 → 3S + 4NO + 4H2O. So, the coefficient of H2O is 4. Show more…

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Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of H2O is: H2S + HNO3 → S + NO (acidic solution) 2. What is the reducing agent in the unbalanced reaction? Zn(s) + (aq) → Re(s) + Zn2+(aq) (acidic solution) Zn Zn2+ Re 3. When the following redox equation is balanced with smallest whole-number coefficients, the sum of all coefficients will be _____. Bi(OH)3(s) + (aq) → (aq) + Bi(s) (basic solution) 10 12 13 14 None of these choices is correct. 4. Consider the following balanced redox reaction: Mn2+(aq) + (aq) + 2H2O(l) → MnO2(s) + 4H+(aq) + (aq). Which of the following statements is true? Mn2+(aq) is the oxidizing agent and is reduced. Mn2+(aq) is the oxidizing agent and is oxidized. Mn2+(aq) is the reducing agent and is oxidized. Mn2+(aq) is the reducing agent and is reduced. Manganese does not change its oxidation number in this reaction.

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Transcript

00:01 In the first part of the equation we have to complete the equation which is given as h2 s plus hno3.

00:10 It gives s plus n o and we also have to tell the coefficients.

00:21 In the second part we have to tell that in the following equation which is given as this.

00:40 So in this equation, which is the reducing agent, we have to tell from the following options.

00:54 In the third question, so a redox reaction has been given which is b -i -o -h -3 in the solid state plus aqueous gives ques plus b -i in the solid state.

01:18 So this is the basic solution and we have to tell that the number of coefficients.

01:38 In the fourth question we have to tell from the following equation which is given as mn2 positive in the aquas plus aquas plus 2m plus 2 moles of water in the liquid state.

01:59 It gives mno2 plus 4h positive.

02:08 This is in solid state.

02:14 This is in aqua state plus ques.

02:21 And we have to tell that which of the following statements is true.

02:31 Now coming on to the solution.

02:36 So the first part here we have to complete the reaction.

02:40 So, the reaction will be this, that is h2s plus hno3 to give s plus no plus water.

02:49 So this is the complete reaction and the balanced reaction is as follows.

03:03 3 moles of h2s reacts with 2 moles of hno3 to give 3s plus 2 moles of no and 4 moles of water.

03:10 So here the coefficient of water will be 4.

03:13 Now the next part here the reaction is zn solid plus aquas to give r e in the solid state plus zn2 positive in the aqua state...

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