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Softa [21]
3 years ago
8

Write a balanced half-reaction for the oxidation of gaseous nitric oxide to aqueous nitrous acid in acidic aqueous solution. Be

sure to add physical state symbols where appropriate.
Chemistry
1 answer:
Bad White [126]3 years ago
4 0

Explanation:

Reaction for oxidation of gaseous nitric oxide to aqueous nitrous acid is as follows.

            NO(g) \rightarrow HNO_{2}(aq)

By adding water, we will balance the oxygen atoms on both the sides as follows.

          NO(g) + H_{2}O(l) \rightarrow HNO_{2}(aq)

Now, we will balance the hydrogen atoms by adding H^{+} ions as follows.

         NO(g) + H_{2}O(l) \rightarrow HNO_{2}(aq) + H^{+}(aq)

Now, we will add OH^{-} ions on both the sides in order to neutralize H^{+} ions.

      NO(g) + H_{2}O(l) + OH^{-}(aq) \rightarrow HNO_{2}(aq) + H^{+}(aq) + OH^{-}(aq) ..... (1)

We will combine the H^{+} and OH^{-} ions in order to form water in equation (1) and cancelling the common terms as follows.

            NO(g) + OH^{-}(aq) \rightarrow HNO_{2}(aq)

Now, we will balance the charge on both the sides as follows.

         NO(g) + OH^{-}(aq) \rightarrow HNO_{2}(aq) + 1e^{-}

Thus, we can conclude that the balanced half-reaction equation is as follows.

         NO(g) + OH^{-}(aq) \rightarrow HNO_{2}(aq) + 1e^{-}

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Nastasia [14]

I'm not positive what evaporations you need but I have these.....

1. Wind assists evaporation; for example in clothes dry faster under a fan.

2. Heat assists evaporation; for example, in summer clothes dry faster than in winter.

3. Increase in surface area exposed assists evaporation; for instance, a wet cloth spread out dries faster than when folded.

4. Dryness assists evaporation; for instance, clothes dry faster in summer than during the monsoon when the air is humid.

5. The rate of evaporation depends upon the nature of the liquid; for example, petrol evaporates faster than water.

6. Vapor pressure: if pressure is applied on the surface of a liquid, evaporation is hindered; consider, for example, the case of a pressure cooker.

8 0
3 years ago
A buffer is prepared by adding 150mL of 0.50 M NH3 to 250mL of 0.50 M NH4NO3. What is the pH of the final solution? (Kb for NH3
Juli2301 [7.4K]

From the calculations, the pH of the final solution is 9.04.

<h3>What is the pH of the buffer?</h3>

We can use the Henderson Hasselbach equation to obtain the final pH of the solution in terms of the pKb and the base concentration.

Number of moles of salt = 250/1000 L * 0.5 M = 0.125 moles

Number of moles of base = 150/1000 L * 0.5 M = 0.075 moles

Total volume of solution = 250ml + 150ml = 400ml or 0.4 L

Molarity of base = 0.075 moles/ 0.4 L = 0.1875 M

Molarity of salt = 0.125 moles/ 0.4 L = 0.3125 M

pOH = pKb + log[salt/base]

pKb = -log(1.8 x 10^-5) = 4.74

pOH = 4.74 + log[0.3125/0.1875 ]

pOH = 4.96

pH = 14- 4.96

pH = 9.04

Learn more about pH:brainly.com/question/15289741

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5 0
2 years ago
From the unbalanced reaction: B2H6 + O2 ---&gt; HBO2 + H2O
Drupady [299]

Answer: 125 g

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} B_2H_6=\frac{36.1g}{17}=1.30moles

The balanced reaction is:

B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O

According to stoichiometry :

1 mole of B_2H_6 require = 3 moles of O_2

Thus 1.30 moles of B_2H_6 will require=\frac{3}{1}\times 1.30=3.90moles  of O_2

Mass of O_2=moles\times {\text {Molar mass}}=3.90moles\times 32g/mol=125g

Thus 125 g of O_2 will be needed to burn 36.1 g of B_2H_6

4 0
3 years ago
Which career best fits the group of words below?
Alik [6]

Answer:

The answer is "power dispatcher."

Explanation:

"Power dispatchers" are also known as <em>"power distributors</em>." Their field of work is related to controlling the distribution of electricity to the <em>"electrical substations." </em>These substations allow the transmission of electricity to step down from a higher voltage to a lower voltage.

Whenever there is an electrical problem, the power dispatcher also comes into play. They make sure that the power lines are intact and checks for possible damages when typhoons or earthquakes occur.

Thus, this explains the answer.

8 0
3 years ago
Read 2 more answers
Use the diagram to answer each question.
Naya [18.7K]

Answer:

84g Thus, 84g of KNO3 must be dissolve in 100 grams of water to form a saturated solution at 50 oC.

and 136 of KNO3 must be dissolve in 100 grams of water to form a saturated solution at 70 oC.

Explanation:

4 0
3 years ago
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