Question

Write the formula and calculate the molar mass of Ammonium Oxalate.

Answer 1

We know that the molecular mass of a molecule is estimated as the summation of all atomic masses of all atoms which are present in a molecule. Initially we should write the exact formula of ammonium oxalate so that we can have the idea of the number of each atom present in the compound and then we can find the cumulative.

Complete Step by step answer: We know that the branch of science which gives information about the chemical composition, molecular structure and properties of material exits in the universe is known as chemistry. The representation of atoms in a compound using their chemical symbols is named as the chemical formula of the compound. The molecular mass of a compound is the average relative mass of its molecules as compared with an atom of carbon $12$ isotope taken as $12$.
We know that, molar mass also known as molecular mass refers to the mass of one mole of a specific element or compound. Molar mass is the physical quantity related to the elements or compounds which provide the relationship between the number of moles and the mass of the element or compound. The symbol ‘M’ is used to denote the physical quantity of molar mass. The S.I. the unit of molar mass is $kg/mol$. Molar mass of any compound can be determined with the following formula;
$M = m/n\;\;\;\;\;\;$
Where, M is the molar mass, m is mass of substance in grams and n is the number of moles of the compound.
The chemical formula of Ammonium Oxalate is ${C_2}{H_8}{N_2}{O_4}$.
We know that the molar mass of carbon is twelve, hydrogen is one, nitrogen is seven and oxygen is sixteen.
In ammonium oxalate we have two atoms of carbon, eight atoms of hydrogen, two atoms of nitrogen and four atoms of oxygen.
So overall the molecular mass is calculated as shown below.

$$Molar\;mass = \left( {12 \times 2} \right) + \left( {1 \times 8} \right) + \left( {14 \times 2} \right) + \left( {16 \times 4} \right)\\\ Molar\;mass = 124\;g/mol$$

Thus, the molar mass of ammonium oxalate is $124\;g/mol$.

Note: By adding the normal atomic masses of the constituent atoms, the molar mass of a compound can be measured.Ammonium Oxalate is an inorganic compound. Actually it is an oxalate salt containing ammonium. Ammonium oxalate is colourless and odorless non- volatile strong dicarboxylic acid.