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Naddik [55]
3 years ago
13

The reaction below was carried out in an acidic solution. Upper I minus, plus upper I upper O minus subscript 3 right arrow uppe

r I subscript 2. Which statement is true about this equation?

Chemistry
2 answers:
Ganezh [65]3 years ago
5 0

Answer:

It has been balanced by using the half-reaction method.

Explanation:

I- and IO3- gives I2

We divide the reaction into two half-reactions

(2 I- >> I2 + 2e-) x5 ( oxidation  : I goes from -1 to 0 )

2 IO3- + 12H+ + 10e- >> I2 + 6H2O ( reduction : I goes from +5 to 0 )

10 I- >> 5I2 + 10e-

2IO3- + 12H+ + 10e- >> I2 + 6H2O

-----------------------------------------------------

10 I- + 2IO3- + 12H+ >> 6I2 + 6H2O

To get the smallest numbers we divide by 2 :

5 I- + IO3- + 6H+ >> 3I2 + 3H2O

Bogdan [553]3 years ago
5 0

Answer:

It has been balanced by using the half-reaction method.

Explanation:

edge :))))

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6 0
3 years ago
What happens to the rate of dissolution as the temperature is increased in a gas solution?
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The rate decreases

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8 0
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The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n =
Dvinal [7]

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If the moles of gas are tripled, the volume must also triple.

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Equal volume of all the gases at same temperature and pressure have equal number of molecules.

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When number of moles decreases the volume also goes to decrease at constant temperature and pressure.

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5 0
3 years ago
Use the periodic table to determine the electron configuration for Ca and Pm in noble-gas notation Ca: [Ar]4s2 [Ar]4s1 [Ar]3s2 [
sveta [45]
Answer:

1) Ca: [Ar]4s²
2) Pm: [Xe]6s²4f⁵

Explanation:

1) Ca:

Its atomic number is 20. So it has 20 protons and 20 electrons.

Since it is in the row (period) 4 the noble gas before it is Ar, and the electron configuration is that of Argon whose atomic number is 18.

So, you have two more electrons (20 - 18 = 2) to distribute.

Those two electrons go the the orbital 4s.

Finally, the electron configuration is [Ar] 4s².

2) Pm

The atomic number of Pm is 61, so it has 61 protons and 61 electrons.

Pm is in the row (period) 6. So, the noble gas before Pm is Xe.

The atomic number of Xe is 54.

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The resultant distribution for Pm is: [Xe]6s² 4f⁵.
5 0
2 years ago
Read 2 more answers
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