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3 years ago

B) Explain three ways by which water can be purified in the home

Chemistry

1 answer:

frosja888 [35]3 years ago

6 0

Explanation:

Water can be purified from through...

Filtration - This involves the use of filter paper to remove solid objects found in water.

Boiling - This involves keeping water at 100 deg celcius for a while through application of heat and this kills microorganisms in the water.

Addition of alum - Alum causes very fine and small particles that are suspending in water to stick together making them large enough to be removed through filtration.

Chemicals used in water treatment...

Chlorine - Chlorine is used to kill bacteria, viruses and other disease causing pathogens found in water

That's all I know...

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The balanced equation for the mentioned reaction is:

CS₂(g) + 3O₂(g) → CO₂(g) + 2SO₂(g),

It is clear that 1.0 mole of CS₂ react with 3.0 mole of O₂ to produce 1.0 mole of CO₂ and 2.0 moles of SO₂.

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To find the no. of moles of SO₂ produced from 3.1 liters (0.1384 mol) of hydrogen:

Using cross multiplication:

3.0 mol of O₂ produce → 2.0 mol of SO₂, from stichiometry.

0.1384 mol of O₂ produce → ??? mol of SO₂.

∴ The no. of moles of SO₂ = (2.0 mol)(0.1384 mol)/(3.0 mol) = 0.09227 mol.

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1.0 mol of SO₂ represents → 22.4 L, at STP.

0.09227 mol of SO₂ represents → ??? L.

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$Cu_4(OH)_6(SO_4)$

You have OH- conc = 2.3 ✕ 10−6 m
From the formula, you can observe the ratio of Cu2+ to OH- is 4 : 6 = 2:3

So, for 2.3 ✕ 10−6 m OH-
[Cu2+] = $\frac{2}{3} \times 2.3 \times 10^{-6}$

$= 1.53 \times 10^{-6} 
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