Question

how to write balanced chemical equations in boards? hit and trial method or manual method?​

Answer 1

It's up to you. If you frequently make mistakes while balancing then you can draw a table, write the elements and their masses. If you are good at balancing then you don't have to do that.

Unless it's mentioned that you have to draw a table etc, you need not do it. You can always go with solving it mentally, or the hit or trial method.

Answer 2

Answer

$\boxed{\textbf{Balanced chemical equation}}$

A balanced chemical equation is that in which the total number of atoms of each element are equal on both the sides i.e., on the products and reactants side.

The balancing of chemical equation is based on the law of conservation of mass.

According to the law , " A mass can neither be created nor be destroyed during a chemical reaction ."

The method used for balancing a chemical equation is known as The Hit and Trial method.

It is known as so because we make trials to balance a certain given equation.

In this method, the number of each element remains the same, before and after a chemical reaction.

There are several steps involved in this method:

• Writing unbalanced equation and enclosing into brackets.
• making the list of numbers present on both sides.
• balancing first element.
• balancing second element.
• other elements to be balanced.
• checking and re-checking.

COMING TO THE POINT!

the hit and trial method takes a bit time to solve , but it is an accurate and the best method, to balance a skeletal equation (unbalanced equation).