Which of the following do not cause hardness
`CaCl_(2)`
`Ca(HCO_(3))_(2)`
`MgSO_(4)`
`NaCl`

Which of the following ions will cause hardness in water sample?

Which of the following ions will cause hardness in water sample?

Which of the following substances cause permanent hardness of water

CaCl_(2)+Na_(2)SO_(4)toCaSO_(4)↓+2NaCl

Which of the following compounds contains no covalent bond(s)? NaCl, PH_(3),O_(2),B_(2)H_(6),H_(2)SO_(4),CaCl_(2)

Complete the following equations : CaCl_(2)+Na_(2)CO_(3)to

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

Which of the following will be the most hydrated salt ? (1) NaCl (2) MgCl_2 (3) AlCl_3 (4) SiCl_4

CaCl_(2)+Na_(2)SO_(4)to No reaction