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Damm [24]
3 years ago
9

What is the total concentration of ions in a 0.10 M solution of barium chloride?

Chemistry
2 answers:
Murljashka [212]3 years ago
4 0
It is 0.30 because BaCl2 breaks into Ba+2 + 2Cl-... each on has 0.10 M so (0.10) + 2(0.10)= 0.30M
alexgriva [62]3 years ago
4 0

Answer:

0.30 M is the total concentration of ions in a 0.10 M solution of barium chloride.

Explanation:

Concentration of  solution of barium chloride = 0.10 M = 0.10 mol/L

BaCl_2(aq)\rightarrow Ba^{2+}(aq)+2Cl^-(aq)

1 Mole of barium chloride gives 1 mole of barium ions and 2 moles of chloride ions.

Concentration of barium ions in solution = [x]

[x]=1\times 0.10 mol/L=0.10 mol/L

Concentration of chloride ions in solution = [y]

[y]=2\times 0.10 mol/L=0.20 mol/L

Total concentration of ions in the solution : [x]+[y]

0.10 mol/L + 0.20 mol/L = 0.30 mol/L

0.30 M is the total concentration of ions in a 0.10 M solution of barium chloride.

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Energy = 27.9 g (1 mol / 18.02 g) x 40.7 kJ/mol


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Explanation:

If the water is cooled reversibly with no phase changes, then there is no entropy generation during the entire process. By the Second Law of Thermodynamics, we represent the change of entropy (s_{2} - s_{1}), in joules per gram-Kelvin, by the following model:

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c_{w} - Specific heat of water, in joules per kilogram-Kelvin.

T_{1}, T_{2} - Initial and final temperatures of water, in Kelvin.

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s_{2} - s_{1} = -1083.112\,\frac{J}{kg\cdot K}

The change in entropy is -1083.112 joules per kilogram-Kelvin.

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