Q. 6.35 - An Introduction to General, Organic, and Biological Chemistry

Question

Write the formula including the charge for each of the following polyatomic ions:

a. hydrogen carbonate (bicarbonate)

b. ammonium

c. phosphite

d. chlorate

Step-by-Step Solution

Answer

a. The formula of hydrogen carbonate (bicarbonate) is ${\mathrm{HCO}}_3^{-}$

b. The formula of ammonium is ${\mathrm{NH}}_4^{+}$

c. The formula of phosphite is ${\mathrm{PO}}_3^{3-}$

d. The formula of chlorate is ${\mathrm{ClO}}_3^{-}$

Part (a) Step 1 : Given information

We have to write the formula of hydrogen carbonate (bicarbonate) including charge.

Part (a) Step 2 : Simplification

• We know that Hydrogen is $\mathrm{H}$ and carbonate is ${\mathrm{CO}}_3^{2-}$
• So, the Chemical formula of hydrogen carbonate (bicarbonate) is ${\mathrm{HCO}}_3^{-}$

Part (b) Step 1 : Given information

We have to write the formula of ammonium including charge.

Part (b) Step 2 : Simplification

• We know that ammonium is ${\mathrm{NH}}_3$ (ammonia) with ${\mathrm{H}}^{+}$ ion.
• So, the Chemical formula of  ammonium is ${\mathrm{NH}}_4^{+}$
  

Part (c) Step 1 : Given information

We have to write the formula of phosphite including charge.

Part (c) Step 2 : Simplification

• We know that phosphite is composed of $\mathrm{P}$(Phosphorus ) and $\mathrm{O}$(Oxygen).
• So, the Chemical formula of  phosphite is ${\mathrm{PO}}_3^{-3}$
  

Part (d) Step 1 : Given information

We have to write the formula of chlorate including charge.

Part (d) Step 2 : Simplification

• We know that chlorate is composed of $\mathrm{Cl}$(Chlorine) and $\mathrm{O}$(oxygen)
• So, the Chemical formula of  chlorate is ${\mathrm{ClO}}_3^{-}$