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navik [9.2K]
3 years ago
8

2 Na + Cl2 --> 2 NaCl

Chemistry
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

12.208 L

Explanation:

We'll begin by calculating the number of mole in 25 g of Na. This can be obtained as follow:

Mass of Na = 25 g

Molar mass of Na = 23 g/mol

Mole of Na =?

Mole = mass /Molar mass

Mole of Na = 25/23

Mole of Na = 1.09 moles

Next, we shall determine the number of mole of Cl2 required to react with 1.09 moles of Na. This can be obtained as follow:

2Na + Cl2 –> 2NaCl

From the balanced equation above,

2 moles of Na reacted with 1 mole of Cl2.

Therefore, 1.09 moles of Na will react with = (1.09 × 1)/2 = 0.545 mole of Cl2.

Thus, 0.545 mole of Cl2 is needed for the reaction.

Finally, we shall determine the volume of Cl2 required for the react as follow:

Recall: 1 mole of any gas occupy 22.4 L at STP.

1 mole of Cl2 occupied 22.4 L at STP.

Therefore, 0.545 mole of Cl2 of Cl2 will occupy = 0.545 × 22.4 = 12.208 L at STP.

Therefore, 12.208 L of Cl2 is needed for the reaction.

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Are molecules with identical chemical formulas but different three-dimensional structures
Radda [10]
<span>Molecules are having the same chemical formula same number of atom but different three dimensional shapes are called <u>isomer</u>. Cis trans isomers maintain the same covalent partnerships,but atom may arranged differently.There are two or more compounds arranged in same molecular formula but different arranged atoms are seen in this molecule with different structure of it.</span>
5 0
3 years ago
1.
Mama L [17]

The question is incorrect, the correct question is;

Which of the following ground-state electron configurations represents the atom that has the

lowest first-ionization energy?

a) 1s2

b) 1s22s2

c) 1s22s22p6

d) 1s22s22p63s23p1

e) 1s22s22p63s23p3

The correct ground state configuration that represents the atom that has the lowest first ionization energy is 1s² 2s² 2p⁶ 3s² 3p¹.

The first ionization energy is the energy required to remove an electron from the outermost shell of an atom.

Ionization energy decreases down the group as number of shells increases but increases across the period as nuclear charge increase.

As the number of shells increases, the degree of shielding or screening decreases it easier to remove the outermost electron.

The elements whose ground state electronic configurations were shown are;

Helium - 1s²  

Beryllium - 1s² 2s²  

Neon - 1s² 2s² sp⁶  

Aluminum - 1s² 2s² 2p⁶ 3s² 3p¹    

Phosphorus - 1s² 2s² 2p⁶ 3s² 3p³

Aluminium (1s² 2s² 2p⁶ 3s² 3p¹) is a metal so it has the lowest first ionization energy since metals are highly electropositive.

Learn more: brainly.com/question/17783060

6 0
2 years ago
Use the "x is small" approximation to find the concentration of the products in the following reaction which initially contains
Mrrafil [7]

Answer:

Concentration of product at equilibrium ;

[H^+]=0.0000229 M

[CN^-]=0.0000229 M

Explanation:

HCN(aq)\rightleftharpoons H^+(aq) + CN^-(aq)

initially

0.85 M        0    0

(0.85-x)M    x      x

The equilibrium constant of reaction = K_c= 6.17\times 10^{-10}

The expression of an equilibrium cannot can be written as:

K_c=\frac{[H^+][CN^-]}{[HCN]}

6.17\times 10^{-10}=\frac{x\times x}{(0.85-x)}

Solving for x:

x = 0.0000229

Concentration of product at equilibrium ;

[H^+]=0.0000229 M

[CN^-]=0.0000229 M

4 0
3 years ago
How can you determine if covalent bonding will occur?
Crank
If two nonmetals are bonded together. So look at your periodic table of elements and decide if the two elements that are being bonded are nonmetals or not.
5 0
3 years ago
When lithium nitride, Li 3 N ( s ) , is treated with water, H 2 O ( l ) , ammonia, NH 3 ( g ) , is produced. Predict the formula
allochka39001 [22]

Answer : The formula of the gas produced is, PH_3 (phosphine gas)

Explanation :

According to the question, when sodium phosphide is treated with water then it react to give phosphine gas and sodium hydroxide.

The balanced chemical reaction will be:

Na_3P(aq)+3H_2O(l)\rightarrow PH_3(g)+3NaOH(aq)

By Stoichiometry of the reaction we can say that:

1 mole of sodium phosphide reacts with 3 moles of water to give 1 mole of phosphine gas and 3 moles of sodium hydroxide.

Thus, the formula of the gas produced is, PH_3 (phosphine gas)

8 0
3 years ago
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