A solution contains 90 milliequivalents of HC1 in 450ml. What is its normality?
1 answer:
Answer:
Normality N = 0.2 N
Explanation:
Normality is the number of gram of equivalent of solute divided of volume of solution, where the number of gram of equivalent of solute is weight of the solute divided by the equivalent weight.
Normality is represented by N.
Mathematically, we have :
Given that:
number of gram of equivalent of solute = 90 milliequivalents 90 × 10⁻³ equivalent
volume of solution (HCl) = 450 mL 450 × 10⁻³ L
Normality N = 0.2 N
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The ratio of the concentration of potassium ions (K⁺) to the concentration of carbonate ions (CO₃²⁻) = 2: 1
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Reaction equations are chemical formulations for reagents and product substances
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Molarity shows the number of moles of solute in every 1 liter of solution.
Electrolytes will dissociate into ions when dissolved in water
While non-electrolyte solutions do not produce ions
Electrolyte solutions can be
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Potassium carbonate (K₂CO₃) will dissociate into ions
K₂CO₃ ⇒ 2K⁺+ CO₃²⁻
Comparison of reaction coefficients = mole ratio = concentration ratio for the same volume, so
The mole ratio of the ions is
K⁺ : CO₃²⁻ = 2: 1
This comparison also shows the ratio of concentrations of ions: (K₂CO₃ concentration = 0.015 M)
K⁺: CO₃²⁻ = 2.0.015: 1.0.015
K⁺: CO₃²⁻ = 0.03: 0.015 = 2: 1
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Keywords: reaction coefficients, potassium carbonate, electrolytes
Explanation:
Molecules of compounds are are compounds composed two or more than two different elements.
Molecules of an elements are made up two or more than two numbers of same type of atoms
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It is compound composed of sulfur and oxygen element.
(b)
It is a molecules of a single element made up of 8 sulfur atoms.
(c) Cs
It is a symbol of an element named cesium.
(d)
It is compound composed of nitrogen and oxygen element.
(e) O
It is a symbol of an element named oxygen.
(f)
It is a molecule of a single element made up of 2 oxygen atoms.
(g)
It is a molecule of a single element made up of 3 oxygen atoms.
(h)
It is compound composed of carbon and hydrogen element.
(i) KBr
It is compound composed of potassium and bromine element.
(j) S
It is a symbol of an element named sulfur.
(k)
It is a molecule of a single element made up of 4 phosphorus atoms.
(l) LiF
It is compound composed of lithium and fluorine element.