Some Basic Concepts Of Chemistry Question 278

Question: One litre hard water contains 12.00 mg Mg2+ milli equivalent of washing soda required to remove its hardness is [CBSE PMT 2001]

Options:

A) 1

B) 12.15

C) 1×103

D) 12.15×103

Show Answer

Answer:

Correct Answer: A

Solution:

Meq of Mg+2 Meq of washing soda WE×1000= Mg+2 ; EW=242=12

12×10312×1000=1 .



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