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zvonat [6]
3 years ago
5

Complete and balance the following redox equation using the set of smallest whole-number coefficients. Now sum the coefficients

of all species in the balanced equation. (Remember the coefficients that are equal to one.) BrO3-(aq) + Sb3+(aq) ? Br-(aq) + Sb5+(aq) (acid solution) The sum of the coefficients is ___.
Chemistry
1 answer:
EleoNora [17]3 years ago
4 0

Answer:

17

Explanation:

Oxidation reaction is defined as the chemical reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the chemical reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

X^{n+}+ne^-\rightarrow X

For the given chemical reaction:

BrO_3^-(s)+Sb^{3+}(aq.)\rightarrow Br^-(aq.)+5Sb^{5+}(aq)

The half cell reactions for the above reaction follows:

Reduction half reaction:  BrO_3^-+6H^++6e^-\rightarrow Br^{-}+3H_2O

Oxidation half reaction:  Sb^{3+}\rightarrow Sb^{5+}+2e^-

Multiplying the Oxidation half reaction by 3 and we get that:-

3Sb^{3+}\rightarrow 3Sb^{5+}+6e^-

Adding the half reactions, we get that:-

BrO_3^-+6H^++3Sb^{3+}\rightarrow Br^{-}+3Sb^{5+}+3H_2O

<u>The sum of the coefficients is:- 1 + 6 + 3 + 1 + 3 + 3 = 17</u>

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Predict the bond angles for each of the following labeled bonds.
boyakko [2]

The bond angles a and b are 120° respectively. The bond angle c is 111.4° .while the bond angle d is 120°. The bond angles e and f are 120° respectively.

In the carbonate ion, all the bond angles and bond lengths are equal hence three equivalent resonance structures can be drawn for the ion. All the bond angles, ( a and b) in carbonate ion all have bond angle of 120°.

The bond angle marked c in OCCl2 has a bond angle 111.4°, the bond angle marked d in the compound has the bond angle, 120°.

There are three bond angles present in the nitrate (NO3-) ion. Three resonance structures contribute to this bond. Based on these structures, the bond angles e and f in the molecule is 120°.

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3 0
3 years ago
Which metal ion was green when placed in the fire?
Debora [2.8K]

Answer:

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Explanation:

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3 years ago
The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release
KATRIN_1 [288]

The mass of melted gold to release the energy would be  3, 688. 8 Kg

<h3>How to determine the mass</h3>

The formula for quantity of energy is given thus;

Q = n × HF

Where n represents number of moles

HF  represents  heat of fusion

To find the number of moles, we have

235.0 = n × 12.550

number of moles = \frac{235}{12. 550} = 18. 725 moles

Note that molar mass of Gold is 197g/ mol

Let's note that;

Number of moles = mass/ molar mass

Mass = number of moles × molar mass

Mass = 18. 725 × 197

Mass = 3, 688. 8 Kg

Thus, the mass of melted gold to release the energy would be  3, 688. 8 Kg

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8 0
1 year ago
How many mm are in 3.6 km?
Rainbow [258]

Answer:

3.6km = 3.6e+6mm

Explanation:

6 0
3 years ago
Read 2 more answers
4 Al + 3 O2 --&gt; 2 Al2O3
SIZIF [17.4K]

Answer:

The answer to your question is 7.4 moles of Aluminum

Explanation:

Data

moles of Al = ?

moles of Al₂O₃ = 3.7

Balanced chemical reaction

                4 Al  +  3 O₂  ⇒  2 Al₂O₃

To solve this problem use proportions and cross multiplication. Use the coefficients of the balanced chemical equation.

                4 moles of Aluminum ----------------- 2 moles of Al₂O₃

                 x                                  ----------------- 3.7 moles of Al₂O₃

                            x = (3.7 x 4) / 2

                            x = 14.8 / 2

                            x = 7.4 moles of Aluminum

5 0
3 years ago
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