3 years ago

Alcl3+Na =NaCl+ Al .did Al change oxidation number

Chemistry

1 answer:

saul85 [17]3 years ago

5 0

Answer:

yes it is ( From +3 to 0 )

Explanation:

If this is the balanced equation:

AlCl3 + 3Na ——> 3NaCl + Al

Al Cl 3Na Na Cl Al

+3 -3 0 +1 -1 0

You might be interested in

Calculate the unit cell edge length for an 78 wt% Ag- 22 wt% Pd alloy. All of the palladium is in solid solution, and the crysta

BaLLatris [955]

Answer:

The unit cell edge length for the alloy is 0.405 nm

Explanation:

Given;

concentration of Ag, $C_{Ag}$ = 78 wt%

concentration of Pd, $C_P_d$ = 22 wt%

density of Ag = 10.49 g/cm³

density of Pd = 12.02 g/cm³

atomic weight of Ag, $A_A_g$ = 107.87 g/mol

atomic weight of iron, $A_P_d$ = 106.4 g/mol

Step 1: determine the average density of the alloy

$\rho _{Avg.} = \frac{100}{\frac{C_A_g}{\rho _A_g} + \frac{C__{Pd}}{\rho _{Pd}} }$

$\rho _{Avg.} = \frac{100}{\frac{78}{10.49} + \frac{22}{12.02} } = 10.79 \ g/cm^3$

Step 2: determine the average atomic weight of the alloy

$A _{Avg.} = \frac{100}{\frac{C_v}{A _A_g} + \frac{C__{Pd}}{A _{Pd}} }$

$A _{Avg.} = \frac{100}{\frac{78}{107.87} + \frac{22}{106.4} } = 107.54 \ g/mole$

Step 3: determine unit cell volume

$V_c=\frac{nA_{avg.}}{\rho _{avg.} N_a}$

for a FCC crystal structure, there are 4 atoms per unit cell; n = 4

$V_c=\frac{4*107.54}{ 10.79*6.022*10^{23}} = 6.620*10^{-23} \ cm^3/cell$

Step 4: determine the unit cell edge length

Vc = a³

$a = V_c{^\frac{1}{3} }\\\\a = (6.620*10^{-23}}){^\frac{1}{3}}\\\\a = 4.05 *10^{-8} \ cm$ = 0.405 nm

Therefore, the unit cell edge length for the alloy is 0.405 nm

7 0

3 years ago

Which technique reveals latent fingerprints on wooden furniture?

love history [14]

Answer: Nonporous

Explanation: I don’t know if this is right but please correct me!

7 0

2 years ago

Read 2 more answers

use the reaction that occours when magnesium burns in oxygen to show how a reaction might be included in more than one category

Schach [20]

2Mg+O₂⇒2MgO
It can be a combustion reaction, or it can be a combination reaction

5 0

2 years ago

Ionization and electronegativity are related to the periodic table in that:

Alla [95]

The answer would be A.

5 0

2 years ago

A biology class wants to perform an experiment to investigate the effect of different colors of light of green, yellow, red and

olga2289 [7]

Answer:

controlled variables

5 0

2 years ago