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Anna [14]
3 years ago
6

Write the balanced chemical reaction for the formation of Fe2(SO4)3 from Fe2O3 and SO3 and determine how many moles of Fe2(SO4)3

are formed when 12.7 Mol of SO3 are reacted.
Chemistry
1 answer:
Leviafan [203]3 years ago
6 0

Answer:

4.23 mol

Step-by-step explanation:

Step 1. <em>Balanced equation </em>

Fe₂O₃ + 3SO₃ ⟶ Fe₂(SO₄)₃

Step 2. <em>Calculation: </em>

You want to convert moles of SO₃ to moles of Fe₂(SO₄)₃.

The molar ratio is 1 mol Fe₂(SO₄)₃:3 mol SO₃

Moles of Fe₂(SO₄)₃ = 12.7 mol SO₃ × (1 mol Fe₂(SO₄)₃/3 mol SO₃)

Moles of Fe₂(SO₄)₃ = 4.23 mol Fe₂(SO₄)₃

The reaction will form 4.23 mol of Fe₂(SO₄)₃.

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Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. the nacl so
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1)

<span>m(NaCl) = 1.95 g
V(H2O) = 250mL
M(NaCl) = </span><span>58.5 g/mole

Since waters density value is 1g/mL, it can be assumed that volume and mass of water are same values:

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</span><span>molality of NaCl:
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<span>
milimolality of NaOH = 0.132/0,001 = 132 mmole/kg
</span>
milliosmolality of NaOH = milimolality x N of ions formed in dissociation

Since NaCl dissociates into 2 ions in solution:
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2)

m(gl) = 9 g
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Since waters density value is 1g/mL, it can be assumed that volume and mass of water are same values:

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milliosmolality of glucose = milimolality x N of ions formed in dissociation

Since glucose does not dissociate, milimolality and milliosmolality are same:
                                        
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3)

The osmosis represents the diffusion of solvent molecules through a semi-permeable membrane that allows passage solvent molecules but does not to the dissolved substance molecule. The osmosis occurs when the concentrations of the solution on both sides of the membrane are different. Since the semi-permeable membrane only permeates the solvent molecules, but not the particles of the dissolved substance, it occurs the solvent diffusion through the membrane, i.e. the solvent molecules pass through the membrane to equalize the concentration on both sides of the membrane. Solvents molecules move from the middle with a lower concentration in the middle with a higher concentration of dissolved substances.

In our case, osmosis will occur because the concentration of NaCl solution and the concentration of glucose solution do not have same values. Osmosis will occur in the direction of glucose solution because it has a lower concentration.

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