Question

how 2 balance these both equations

Answer 1

may be correct or incorrect??

Answer 2

Here we go

:-P

1)

Ca+H20 ->Ca[OH]2+H2

We have 2 atoms of hydrogen on LHS and 4 atoms of hydrogen on RHS Rest of the equation is balanced . So multiplying H20 by 2 we get

Ca +2H2O-> Ca[OH]2+H2

The equation is balanced now

2)Mg[OH]2+HCl->MgCl2+H2O

Here we have 3 hydrogen atom on LHS and 2 on RHS and also we got 2 oxygen atoms on LHS and 1 atom of oxygen on RHS so we will multiply H20 with 2.

Mg[OH]2+HCl->MgCl2+2H2O

Now our oxygen are balanced but we have 3 hydrogen on LHS and 4 Hydrogen on RHS so multiplying HCl by 2 we get

Mg[OH]2+2HCl-> MgCl2+2H2O

.............

Thank me later