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A chemical equation must be balanced to satisfy the law of what?
Wiki User
∙ 13y ago
A balanced chemical reaction obeys the law of conservation of mass, because the same number of atoms of each element must appear on both sides of the equation for the reaction, and in any actual reaction, the same exact atoms will be found on both sides of the equation.
Wiki User
∙ 12y ago
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When is a chemical equation considered balanced?
The reason why Chemical equations are balanced is because each side of the equation must have the same amount of atoms, it is impossible to, for example, have this side with 3 O and that side with 4 O. How to check: Here's a really good and famous example(Guranteed your cehmistry teacher will mention this some day!): CaO + H2O = Ca(OH)2 Is it balanced? There's one Ca(Calcium) on one side, same with the other side. (Balanced!) There's 2 Oxygen on one side, same with the other.(OH)2 Means two Oxygen, two Hydrogen.(Balanced!) There's 2 Hydrogen on both sides as well(H2). So the whole thing's balanced! If it's not balanced, you can't change the numbers, you have to change the number in front. e.g. in the chemical equation of photosynthesis, there's a 6H2O. That means that there is 12 hydrogen and 6 Oxygen, change that "6" at the front to balance stuff. If there's no number at the front, that's the same as "1".
When a chemical equation contains the same number of atoms on both sides is the equation balanced?
From each side the number of atoms of each element must be the same.
Why is the following equation invalid Al 2O2 --- Al2O3?
Because the numbers of aluminum and oxygen atoms are not the same on both sides of the equation, so the equation is not balanced. In order to be balanced, the numbers of atoms of each element must be the same on both sides of the equation. The correct equation is 4Al + 3O2 --> 2Al2O3. This gives 4 aluminum atoms and 6 oxygen atoms on both sides of the equation, so it is balanced.
Why is it important to balance an equation?
being able to write a balanced equation for a reaction is very important. By balancing an equation we can tell how much material we will need to start with, what the likely products to form, and how much of these products will form
Why does a chemical equation have to be balanced?
Balancing Chemical Equations is absolutely essential if you want to determine quantities of reactants or products. An unbalanced chemical equation gives only the identify of the beginning reactants and the final products using the appropriate formulas as well as the conditions of temperature, physical state, and pressure conditions under which the reaction is to operate under. However an unbalanced equation can say nothing about the quantities involved until the equation has been balanced. A balanced equation assures that the conservation law of matter is obeyed. The total mass of reactants must equal the total mass of products. A balanced equation tells you the proportional quantities of each substance involved.
What chemical equation is properly balance?
The reactants must be balanced correctly with reactants.
Why do you need a balanced equation to do stoichiometry?
A chemical equation must respect the law of mass conservation.
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.
What is a balanced chemical equation why should the chemical equation be balanced?
A balanced chemical equation is when both the products and the reactants are balanced, or have the same number of atoms on each side of the equation. For example: 2H20 --> 2H2 + O2 This means there are 2 water molecules as the reactants (before reaction) and 4 hydrogen and 2 oxygen atoms as the products (after reaction). Technically the equation wouldn't work in real life if it weren't correctly balanced.
How do you use 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. That should help.
Why should chemical equation be balance?
According to Law of conservation of mass - The mass of matter can neither be created nor be destroyed. So, th no. of mass in reactants and products in chemical eequation should be same. To satisfy this Law chemical equation should be balance.
How do you kow when a chemical equation is balanced?
The number of atoms for reactants and products must be equal.
What is a balanced chemical equation Why should chemical equations be balanced?
A balanced equation is when the amount of molecules reacting are equal to the amount of molecules being produced. Chemical equations must be balanced because no energy/mass is ever lost when a reaction takes place. This is because atoms are simply arranged.
How does a. balanced chemical equation show that mass is never lost or gained. in a chemical reaction?
Because the Balanced equation can correctly add the reactants and it will equal the sum of the products.If a chemical equation is balanced correctly, there will be the same number of each element on both sides. Since each element has a given and known mass, the total mass on each side of the balanced equation must be equal.
How does a balanced chemical equation show that mass is never lost or gained in a chemical reaction.?
Because the Balanced equation can correctly add the reactants and it will equal the sum of the products.If a chemical equation is balanced correctly, there will be the same number of each element on both sides. Since each element has a given and known mass, the total mass on each side of the balanced equation must be equal.
How does a balanced chemical equation show that a mass is never lost or gained in a chemical reaction?
Because the Balanced equation can correctly add the reactants and it will equal the sum of the products.If a chemical equation is balanced correctly, there will be the same number of each element on both sides. Since each element has a given and known mass, the total mass on each side of the balanced equation must be equal.
What is the balanced equation for lead iodide?
The chemical formula for it is PbI2, but to have an equation there must be another reactant or specified phase.
