inorganic chemistry (2)

River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)CaCl2
B) CaCO3
C) Ca(NO3) 2
D)Mg(NO3)

Reply 1

InkRed

7

Original post by alyoan tariq

River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)CaCl2
B) CaCO3
C) Ca(NO3) 2
D)Mg(NO3)

There's probably more to this but in the given options B(CaCO3) is the only one which, being insoluble in water, gives a ppt. Hope this helps

Original post by alyoan tariq

River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)River water in a chalky agricultural area may contain Ca2+, Mg2+, 2− CO3 , − HCO3 , Cl −
and − NO3
ions. In a waterworks, such water is treated by adding a calculated quantity of calcium hydroxide.
What will be precipitated following the addition of calcium hydroxide?
A)CaCl2
B) CaCO3
C) Ca(NO3) 2
D)Mg(NO3)

The question copied was so interesting you pasted it three times ...