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kherson [118]
2 years ago
15

Given the reaction: cu(s) + 4hno3(aq) → cu(no3)2(aq) + 2no3(g) + 2h2o(l )as the reaction occurs, what happens to copper?

Chemistry
1 answer:
katrin [286]2 years ago
6 0
From the reaction between Cu and HNO₃, the formed gas is NO₂ instead of NO₃. Hence the correct balanced equation would be,
Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O<span>(l)

Here, Cu goes to </span>Cu(NO₃)₂ by changing its oxidation number from 0 to +2 while NO₃⁻ goes to NO₂ by reducing its oxidation state from +5 to +4 . Hence Cu is oxidized by HNO₃ in the reaction.
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The partial pressures in an equilibrium mixture of NO, Cl2, and NOCI at 500 K are as follows: PNo = 0.240 atm, Pel2 = 0.608 atm,
maxonik [38]

Answer : The value of K_p at temperature 500 K is 52.0

Explanation : Given,

Partial pressure of NO at equilibrium = 0.240 atm

Partial pressure of Cl_2 at equilibrium = 0.608 atm

Partial pressure of NOCl at equilibrium = 1.35 atm

The balanced equilibrium reaction is,

2NO(g)+Cl_2(g)\rightleftharpoons 2NOCl(g)

The expression of equilibrium constant K_p for the reaction will be:

K_p=\frac{(p_{NOCl})^2}{(p_{NO})^2(p_{Cl_2})}

Now put all the values in this expression, we get :

K_p=\frac{(1.35)^2}{(0.240)^2(0.608)}

K_p=52.0

Therefore, the value of K_p at temperature 500 K is 52.0

3 0
2 years ago
1. Electronegativity is the… a. amount of energy required to remove the most loosely bound electron from an atom. b. tendency of
Kitty [74]

Answer: C.

ability of an atom to attract an electron from another atom toward itself.

Explanation:

Electronegativity is the chemical property that describes the ability of an atom to attract electron to itself. It is responsible for bond formation between atoms.

8 0
2 years ago
Read 2 more answers
Movement of the ___<br> creates the London dispersion forces.
Tanzania [10]

Answer: electrons

Explanation: moving electrons cause momentarily charge

Distribution on molecule. This distribution induces similar distribution to

Adjacent molecule.

7 0
2 years ago
Hafnium has six naturally occurring isotopes: 0.16% of 174Hf, with an atomic weight of 173.940 amu; 5.26% of 176Hf, with an atom
ser-zykov [4K]

Answer:

177.277amu

Explanation:

the total occuring isotopes for Hafnium is =6.

First isotope had an atomic weight of 173.940amu

Second isotope =175.941amu

Third isotope =176.943amu

Fourth isotope=177.944amu

Fifth isotope. =178.946amu

sixth isotope .179.947amu

<em>Avera</em><em>ge</em><em> </em><em>ato</em><em>mic</em><em> </em><em>wei</em><em>ght</em><em> </em><em>of</em><em> </em><em>Haf</em><em>nium</em><em>=</em><em> </em><em>sum</em><em> </em><em>of</em><em> </em><em>all</em><em> </em><em>the </em><em>atomi</em><em>c</em><em> </em><em>weights</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>iso</em><em>topes</em><em>/</em><em> </em><em>Tota</em><em>l</em><em> </em><em>occu</em><em>ring</em><em> </em><em>isotopes</em>

Thus, 173.940amu+175.941amu+176.943amu+177.944amu+178.946amu+179.947amu.= 1063.661amu

Average atomic weight= 1063.661amu /6 = 177.2768333amu

= 177.277amu to 3 decimal places.

6 0
2 years ago
What type of bond joins the carbon atom to each of the hydrogen atoms? A molecule that consists of four hydrogen atoms and one c
Len [333]

Answer:

Explanation:

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4 0
2 years ago
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