Question

Name the compound used for softening hard water.

Answer 1

Hi,
Washing soda ( Na2.Co3.10H2o) is hydrated sodium carbonet which is used for softening hard water.....i hope it helps you

Answer 2

it is sodium carbonate decahydrate ( also known as washing soda )..... Na2CO3.10H2O. It is given in the NCERT t.b under the uses of washing soda.