Question

A compound X contains 11.5% of Sodium. What can be the minimum molar mass of the compound

Need Proper Explanation ✔️​

Answer 1

Answer:-

Minimum molar mass of the compound can be 200 g/mol .

Explanation:-

→ Molar mass of Sodium = 23 g/mol

________________________________

It is given that the compound 'X' contains 11.5% of Sodium by mass.

So, let's assume the mass of the compound 'X' to be 100g.

To get minimum molar mass of the compund, we have to assume that there is only one Sodium atom in it. [Mass of one Sodium atom = 23g]

________________________________

Now :-

∵ 11.5g of Sodium = 100g of X

∴ 23g of Sodium :-

= 23 × 100/11.5

= 2 × 100

= 200g of X

Answer 2

Answer:

Given :-

• A compound X contains 11.5 % of sodium.

To Find :-

• What can be the minimum molar mass of the compound.

Solution :-

Let,

$\mapsto$ The minimum molar of the compound X be 100 g.

As we know that,

$\clubsuit$ Mass of one sodium atom = 23 g

Given :

• Sodium contains = 11.5 %

According to the question,

If, 11.5 % of sodium contains = 100 g

Then, 23 g of sodium will be :

$\implies \sf 23 \times \dfrac{100}{11.5}$

$\implies \sf 23 \times \dfrac{100 \times 10}{115}$

$\implies \sf {\cancel{23}} \times \dfrac{1000}{\cancel{115}}$

$\implies \sf 1 \times \dfrac{\cancel{1000}}{\cancel{5}}$

$\implies \sf {\cancel{1}} \times \dfrac{200}{\cancel{1}}$

$\implies \sf\bold{\red{200\: g}}$

$\therefore$ The minimum molar mass of the compound is 200 g .