A chemical equation describes what happens in a chemical reaction. The equation identifies the reactants (starting materials) and products (resulting substance), the formulas of the participants, the phases of the participants (solid, liquid, gas), and the amount of each substance. Balancing a chemical equation refers to establishing the mathematical relationship between the quantity of reactants and products. The quantities are expressed as grams or moles.
It takes practice to be able to write balanced equations. There are essentially three steps to the process:
Worked Example Problem
Tin oxide is heated with hydrogen gas to form tin metal and water vapor. Write the balanced equation that describes this reaction.
SnO2 + H2 → Sn + H2O
Refer to Table of Common Polyatomic Ions and Formulas of Ionic Compounds if you have trouble writing the chemical formulas of the products and reactants.
Look at the equation and see which elements are not balanced. In this case, there are two oxygen atoms on the lefthand side of the equation and only one on the righthand side. Correct this by putting a coefficient of 2 in front of water:
SnO2 + H2 → Sn + 2 H2O
This puts the hydrogen atoms out of balance. Now there are two hydrogen atoms on the left and four hydrogen atoms on the right. To get four hydrogen atoms on the right, add a coefficient of 2 for the hydrogen gas. Remember, coefficients are multipliers, so if we write 2 H2O it denotes 2x2=4 hydrogen atoms and 2x1=2 oxygen atoms.
SnO2 + 2 H2 → Sn + 2 H2O
The equation is now balanced. Be sure to double-check your math! Each side of the equation has 1 atom of Sn, 2 atoms of O, and 4 atoms of H.
To do this, you need to be familiar with the properties of various compounds or you need to be told what the phases are for the chemicals in the reaction. Oxides are solids, hydrogen forms a diatomic gas, tin is a solid, and the term 'water vapor' indicates that water is in the gas phase:
SnO2(s) + 2 H2(g) → Sn(s) + 2 H2O(g)
This is the balanced equation for the reaction. Would you like to see another exampleof balancing equations?
Na + H2O ? NaOH + H2
A.S.Apex
A+b=ab
An unbalanced equation having diffrent mass on both side of equation is called skeletol equation.
If your goal is to balance the equation, then yes, you have to chose the coefficients.
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These two compounds doesn't react.
An equation with a degree of 2 is called a quadratic equation. At least one term in the equation will have a variable raised to the second power, e.g. x²
It is an equation. It could be an algebraic equation, or a trigonometric equation, a differential equation or whatever, but it is still an equation.
Simply that, an "equation".Simply that, an "equation".Simply that, an "equation".Simply that, an "equation".
you don't answer an equation, you solve an equation
Logarithmic equation
A logarithmic equation would be any equation that includes the log function.
numbers are equation because there are numbers in equation which make numbers equation
the equation is unbalanced becoz the mass is not the same on both sides of equation such a chemical equation is a skeletal chemical equation for a reaction
equation
what is the equation
The equation is "What = ?"
Scienitifc equation is a equation that has lots of scientifical things
Such an equation is called a "proportion".