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    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)
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    (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
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    (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 ...
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    (Original post by charco)
    The question copied was so interesting you pasted it three times ...
    oh sorry ...my bad
    I didn't see that happening
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    (Original post by alyoan tariq)
    oh sorry ...my bad
    I didn't see that happening
    What exam board do you do?
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    (Original post by RKM21)
    What exam board do you do?
    AS Cambridge 9701 chemistry
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    (Original post by alyoan tariq)
    AS Cambridge 9701 chemistry
    Cool
 
 
 
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