Q. 6.54 - An Introduction to General, Organic, and Biological Chemistry

Question

Write the formula for each of the following molecular compounds:

a. sulfur dibromide

b. carbon disulfide

c. tetraphosphorus hexoxide

d. dinitrogen pentoxide

Step-by-Step Solution

Answer

(a) The formula of the compound is $SB{r}_2$

(b) The formula of the compound is $C{S}_2$

(c) The formula of the compound is $P_4{O}_6$

(d) The formula of the compound is $N_2{O}_5$

Part (a) Step 1: Given information

We need to find out the chemical formula of the given compound i.e. sulfur dibromide.

Part (a) Step 2: Explanation

We know that,

The symbol of sulfur is, $S$

And the symbol of bromide is, $Br$

And the prefix of bromide is di which means there are two bromine atom

So, the subscript of sulfur is one that has no means to write and the subscript of bromine is two

Therefore, according to the name of the given compounds, 

The formula is, $SB{r}_2$

Part (b) Step 1: Given information

We need to find out the chemical formula of the given compound i.e. carbon disulfide

Part (b) Step 2: Explanation

We know that,

The symbol of carbon is, $C$

And the symbol of sulfide is, $S$

And the prefix of sulfide is di which means there are two sulfur atom

So, the subscript of carbon is one that has no means to write and the subscript of sulfur is two

Therefore, according to the name of the given compounds, 

The formula is, $C{S}_2$

Part (c) Step 1: Given information

We need to find out the chemical formula of the given compound i.e. tetraphosphorus hexoxide

Part (c) Step 2: Explanation

We know that,

The symbol of phosphorus is, $P$

And the symbol of oxide is, $O$

And the prefix of phosphorus is tetra which means there are four phosphorus atoms and that of oxide is hex which means six oxygen atoms

So, the subscript of oxygen is six and the subscript of phosphorus is four

Therefore, according to the name of the given compounds, 

The formula is, $P_4{O}_6$

Part (d) Step 1: Given information

We need to find out the chemical formula of the given compound i.e. dinitrogen pentoxide 

Part (d) Step 2: Explanation

We know that,

The symbol of nitrogen is, $N$

And the symbol of oxide is, $O$

And the prefix of nitrogen is di which means there are two nitrogen atoms and that of oxide is pent which means five oxygen atoms 

So, the subscript of nitrogen is two and the subscript of oxygen is five

Now, according to the name of the given compounds, 

The formula is, $N_2{O}_5$