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Why must you balance an equation to describe correctly what happens in a chemical reaction?
The Law of Conservation of Mass applies.
For any reaction
A + B = C + D
The total mass of 'A' & 'B' must equal the total mass of 'C' & 'D'.
Numerically, 20g(A) + 25g(B) = 45 g
So the total of 'C; & 'D; must equal 45g. However, individually 'C' may be 30 g & 'D' 15g = So 30g + 15 g = 45 g as before.
Now going into a reaction equation.
H2SO4 + 2NaOH = NaSO4 + H2O
This equation in incorrect , because you have lost mass on the right hand side These is 1 x sodium (Na) and 1 x water (H2O) missing, So mass is NOT conserved.
The BALANCED equation is
H2SO4 + 2NaOH = Na2SO4 + 2H2O
The numbers of each type of atom are the samer on both sides of the equation ,so since atoms have mass, the balanced equation conserves mass.
Hope that helps!!!!
What else can I help you with?
An expression in which symbols and formulae represent a chemical reaction?
A chemical equation is an expression in which symbols and formulae represent a chemical reaction. It shows the reactants on the left side and the products on the right side, with coefficients to balance the number of atoms on each side.
A chemical reaction can be concisely represented by a chemical what?
A chemical reaction can be represented by a chemical equation.
A shorthand description of a chemical reaction using chemical formulas and symbols is a chemical what?
A chemical equation is a shorthand description of a chemical reaction.
What law is used to describe a balanced equation?
The law of conservation of mass is used to describe a balanced chemical equation, which states that matter cannot be created or destroyed in a chemical reaction.
How do you use the word chemical equation in a sentence?
To correctly determine the balanced chemical equation, one must make sure that the products are appropriately relating to the reactants and make sure that the equation is balanced with the lowest coefficients.
Why cant an unbalanced chemical equation fully describe a reaction?
An unbalanced chemical equation does not accurately reflect the ratio of reactants and products in a chemical reaction, which can affect the stoichiometry of the reaction. Balancing the equation is necessary to ensure that the law of conservation of mass is obeyed and to correctly represent the chemical species involved in the reaction.
Relationship of chemical formula chemical reaction and chemical equation?
Chemical formula is representative for the chemical compositon of a compound. Chemical equation is representative (describe) for a chemical reaction.
An expression used to describe a chemical reaction is called a?
chemical equation
Do chemical equations describe chemical reactions?
A chemical equation is a short way to describe a chemical reaction, so yes.
What is the word for a statement in which chemical formulas are used to describe a chemical reaction?
The word for a statement that uses chemical formulas to describe a chemical reaction is a "chemical equation." This equation represents the reactants and products involved in the reaction, showing their respective chemical formulas and the conservation of mass. Chemical equations can be balanced to ensure that the number of atoms of each element is the same on both sides of the equation.
Is ionic equation and balanced equation are the same equations?
No, but both describe the same chemical reaction.
An expression in which symbols and formulae represent a chemical reaction?
A chemical equation is an expression in which symbols and formulae represent a chemical reaction. It shows the reactants on the left side and the products on the right side, with coefficients to balance the number of atoms on each side.
A chemical reaction can be concisely represented by a chemical what?
A chemical reaction can be represented by a chemical equation.
How can the efficiency of a chemical reaction be expressed?
A chemical reaction is represented by a chemical equation.
A shorthand description of a chemical reaction using chemical formulas and symbols is a chemical what?
A chemical equation is a shorthand description of a chemical reaction.
What law is used to describe a balanced equation?
The law of conservation of mass is used to describe a balanced chemical equation, which states that matter cannot be created or destroyed in a chemical reaction.
What is a statement that uses chemical formulas to describe the identities and relative amounts of the reactants and products involved in the chemical reaction?
A chemical equation is a statement that uses chemical formulas to describe the identities and relative amounts of the reactants and products involved in a chemical reaction. It shows the chemical species at the beginning (reactants) transforming into new substances (products) through the reaction. The equation must be balanced to ensure that the number of atoms on each side is equal.
