Question

Calculate the number of oxalic acid molecule in 100ml of 0.01 M oxalic acid solution

Answer 1

Explanation:

Molarity = weight*1000/molecular weight*vol

Oxalic acid = COOH.COOH.2H2O

Molecular weight = 126g/mol

n factor=2

weight = ?

Molarity M = 0.1

volume = 100mL

Therefore 0.1 = x * 1000/ 126*100

x = 1.26

In normality

Normality = weight*1000/Equivalent weight*vol

Equivalent weight = 63g/mol

0.1 = x *1000/63*100

x = 0.63g