Question

Calculate $$\mathrm{\%}$$ composition of all elements in sodium carbonate ($N{a}_{2}C{O}_3$).

Answer 1

Hint:Firstly, the molecular mass of each compound must be known so with the help of each compound mass, whole compound mass can be figured out. Further percent composition can be found with the help of molecular mass of each compound and whole compound.

Complete step by step answer:
The formula of sodium carbonate is $N{a}_{2}C{O}_3$ .
Now, molecular mass of each compound:
$Na$ molecular mass $=22.98$ grams
$C$ molecular mass $=12.01$ grams
$O$ molecular mass $=16$ grams
Now, the molecular mass of whole compound:
$$2\left(22.98\right)+12.01+3\left(16\right)=105$$ grams
Now, when we do the percent composition, all we need to do is this:
 $\Rightarrow$ $${\displaystyle \frac{AmountofElementinGrams}{TotalCompoundMassinGrams}}\times 100\mathrm{\%}$$
So, now let’s do for each of these elements:
 $\Rightarrow$ $Na$ : $${\displaystyle \frac{22.98}{105.9712}}\times 100\mathrm{\%}=43.37\mathrm{\%}$$
 $\Rightarrow$ $C$ : $$\Rightarrow 43.37\mathrm{\%}+11.33\mathrm{\%}+45.30\mathrm{\%}=100\mathrm{\%}$$
 $\Rightarrow$ $O$ : $${\displaystyle \frac{16}{105.9712}}\times 100\mathrm{\%}=45.30\mathrm{\%}$$
Now, we can check by adding up these percentages and make sure that they add up to exactly $100\mathrm{\%}$ .
$$\Rightarrow 43.37\mathrm{\%}+11.33\mathrm{\%}+45.30\mathrm{\%}=100\mathrm{\%}$$

Note:
The composition of a component in a compound is equal to the percent of the total mass of that compound due to that component. In the compound using the periodic table or a molecular mass calculator. We can solve by adding up the mass of these atoms.
Sodium Carbonate can be stated as the disodium salt of carbonic acid having alkalinizing properties. When it is dissolved in water, sodium carbonate produces carbonic acid along with sodium hydroxide. As it is a strong base, sodium hydroxide neutralizes gastric acid therefore it acts as an antacid.
Sodium carbonate is actually a chemical compound having the molecular formula $N{a}_{2}C{O}_3$.It is commonly referred to as washing soda and it is generally used in cleaning products, glass production, also as a food additive, and many more applications.
If it is improperly handled, or maybe in the event of accidental exposure, sodium carbonate can have several hazards to our health and safety. Inhalation of this chemical can lead to very adverse effects like respiratory tract irritation, coughing, shortness of breath, and even pulmonary edema.