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34kurt
3 years ago
6

Which ion is larger? Cu+ Cu2+ Why? Because Cu2+ has the filled 4s subshell. Because Cu2+ cannot be oxidized further. Because Cu2

+ has a larger positive charge. Because Cu+ has one more subshell than Cu2+. Because Cu+ has one more electron than Cu2+.
Chemistry
2 answers:
Alika [10]3 years ago
6 0

Answer:

Cu^+ ion size is larger than Cu^{2+} ion.

This is because Cu^+ has one more electron than Cu^{2+}.

Explanation:

Cations: They are formed when an atom looses its valence electrons. They are positive ions.

For positive ions, the removal of electron increases the nuclear charge for an outermost electron because the outermost electrons are more strongly attracted by the nucleus. So, the effective nuclear charge increases for cations and with that size of the ion also decreases.

As the positive charge on an ion increases the effective nuclear charges also increases which pulls remaining electrons present in the valence shell more closer towards the nucleus. Due to this size of an ion further decreases.

Cu^+>Cu^{2+}

Also number of electrons in Cu^+ ions are more than that of the Cu^{2+} ions.

So, that is Cu^+ ion size is larger than Cu^{2+} ion.

jek_recluse [69]3 years ago
5 0

The atomic number of Cu = 29

Valence electron configuration of Cu = 3d¹⁰4s¹

Cu+ is formed when 1 electron is lost from Cu. Therefore, the atomic number for Cu+ = 28

Similarly, loss of 2 electrons from Cu results in Cu2+ with an atomic number = 27

Cu+ is the larger ion. This is because as electrons are removed from the valence orbitals, the attraction between the outer electrons and the nucleus tends to increase which then results in a decrease in size.

Ans: Cu+ has one more electron


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How much heat is required to vaporize 25g of water at 100*c
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Answer:

Heat required = 13,325 calories or 55.75 KJ.

Explanation:

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Where, m is the mass of water present

           L = specific latent heat of vaporization

Here , m= 25 gram

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Find [cu2+] in a solution saturated with cu4(oh)6(so4) if [oh − ] is fixed at 2.3 ✕ 10−6 m. note that cu4(oh)6(so4) gives 1 mol
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<span>

</span>Cu_4(OH)_6(SO_4)
<span>
You have OH-  conc = </span>2.3 ✕ 10−6 m
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3 years ago
Based on your solubility rules which of the following compounds would form a precipitate water?
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H2SO4+NaOH=Na2SO4+H2O
3 0
3 years ago
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Rufina [12.5K]

Answer:

                     1. 10.66 moles of Al

                     2.  2.5 moles of Al₂O₃

                     3. 143.87 g of SO₂

Explanation:

                    The balance chemical equation is as follow,

                                      4 Al + 3 O₂ → 2 Al₂O₃

<h3>1.</h3>

According to balance chemical equation,

                       3 moles of O₂ required  =  4 moles of Al

So,

                     8 moles of O₂ will require  =  X moles of Al

Solving for X,

                      X =  8 mol × 4 mol / 3 mol

                      X =  10.66 moles of Al

<h3>2.</h3>

According to balance chemical equation,

                       4 moles of Al produced  =  2 moles of Al₂O₃

So,

                     5 moles of Al will produce  =  X moles of Al₂O₃

Solving for X,

                      X =  5 mol × 2 mol / 4 mol

                      X =  2.5 moles of Al₂O₃

<h3>3.</h3>

The balance chemical equation for the oxidation of carbon disulfide is as follow;

                                CS₂ + 3 O₂ → CO₂ + 2 SO₂

Step 1: <u>Calculate Moles of CS₂ as;</u>

                  Moles  =  Mass / M.Mass

                  Moles  =  85.5 g / 76.14 g/mol

                  Moles  =  1.12 moles of CS₂

Step 2: <u>Find out moles of SO₂ as;</u>

According to balance chemical equation,

                       1 mole of CS₂ produced  =  2 moles of SO₂

So,

                     1.12 moles of CS₂ will produce  =  X moles of SO₂

Solving for X,

                      X =  1.12 mol × 2 mol / 1 mol

                      X =  2.24 moles of SO₂

Step 3: <u>Calculate Mass of SO₂ as;</u>

                  Mass  =  Moles × M.Mass

                  Mass  =  2.24 mol × 64.06 g/mol

                  Mass  =  143.87 g of SO₂

4 0
3 years ago
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