Answer:
Molarity = 0.95 mol/dm³
Explanation:
Given data:
Volume of H₂SO₄ = 15.8 cm³
Volume of NaOH = 20 cm³
Concentration of NaOH = 1.5 mol/dm³
Concentration of H₂SO₄ = ?
Solution:
Chemical equation:
NaOH + H₂SO₄ → Na₂SO₄ + H₂O
First of all we will calculate the number of moles of NaOH and for that we will convert the units first,
Volume = 20 cm³/1000 = 0.02 L
Concentration of NaOH = 1.5 mol/dm³
1 mol/dm³ = 1 mol/L
Concentration of NaOH = 1.5 mol/L
Number of moles of NaOH:
Molarity = number of moles / volume in L
1.5 M = number of moles / 0.02 L
Number of moles = 1.5 M ×0.02 L
Number of moles = 0.03 mol
Now we will compare the moles of NaOH and H₂SO₄
NaOH : H₂SO₄
2 : 1
0.03 : 1/2×0.03 = 0.015 mol
Concentration of H₂SO₄:
Volume of H₂SO₄:
15.8 cm³/1000 = 0.0158 L
Molarity = number of moles / volume in L
Molarity = 0.015 mol / 0.0158 L
Molarity = 0.95 mol/L
1 mol/L = 1 mol/dm³
Molarity = 0.95 mol/dm³
The theory of infinite universe and the theory of vacuum as a substance. First was disproved by the discovery of the big bang and the later by some experiments with light which have shown that vacuum is not a substance but empty space.
<span>carbon + oxygen → carbon dioxide</span>
Answer:
- There are two product produced by the reactants
1. FeI₃
2. Ag₂CO₃
6AgI + Fe₂ (CO₃)₃ ---------> 2FeI₃ + 3Ag₂CO₃
Double Displacement
Explanation:
Incomplete Equation of the reaction is
AgI + Fe₂ (CO₃)₃ --------->
First we have to complete the reaction.
AgI + Fe₂ (CO₃)₃ ---------> FeI₃ + Ag₂CO₃
so from the Reaction
we come to Know about the product
There are two product produced by the reactants
1. FeI₃
Named as Iron iodide also called Iron (III) iodide
2. Ag₂CO₃
Named as Silver carbonate
Balanced equation is based on Law of conservation of mass.
Law of conservation of mass:
"mass can be converted from one form to other but neither can be created nor destroy".
So
To balance a reaction it is important that the number of reactant atoms must equal to atoms of the product.
Atoms of Reactant :
Ag = 1
I = 1
Fe = 2
C = 3
O = 9
Atoms of Product:
Ag = 2
I = 3
Fe = 1
C = 1
O = 3
So,
To balance the equation put numbers as a prefix to formula unit in equation that make atom of the reactant and product become s equal.
its a trail and error process.
Balanced Equation :
6AgI + Fe₂ (CO₃)₃ ---------> 2FeI₃ + 3Ag₂CO₃
Now the numbers of Reactant and product become equal
Atoms of Reactant :
Ag = 6
I = 6
Fe = 2
C = 3
O = 9
Atoms of Product:
Ag = 6
I = 6
Fe = 2
C = 3
O = 9
- This reaction is double displacement. It is also called double replacement reaction.
- it occur when ions of two salts exchange with each other.
- In this reaction Iodide (I¹⁺) ion with exchange carbonate (CO²⁺₃) ion
- and Silver (Ag¹⁺) ion with exchange iron (Fe³⁺) ion
