Question

calculate the percentage of water of crystallisation washing soda NA2CO3.10H2O

Answer 1

washing soda crystals hydrated = >
Na2CO3.10H2O
Molar mass = 286
molar mass of water = 180

% of water = > 180/286*100
= > 62.93

Answer 2

Answer: The mass percentage of water of crystallization in washing soda is 62.9 %.

Explanation:

To calculate the mass percent of water of crystallization in given compound, we use the equation:

$\text{Mass percent of water of crystallization}=\frac{\text{Mass of water in compound}}{\text{Mass of the compound}}\times 100$

We are given:

Mass of washing soda = 286.14 g/mol

Mass of 10 water molecules = 180 g

Putting values in above equation, we get:

$\text{Mass percent of water of crystallization}=\frac{180g}{286.14g}\times 100=62.9\%$

Hence, the mass percentage of water of crystallization in washing soda is 62.9 %.