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Is the answer BHELP! River water in a chalky agricultural area may contain Ca2+ , Mg 2+, CO3 2–, HCO3–, Cl− and NO3– ions. In a water treatment plant, such water is treated by adding a calculated quantity of calcium hydroxide. What will be precipitated from the river water following the addition of calcium hydroxide?
A CaCl2
B CaCO3
C Ca(NO3)2
D Mg(NO3)2
Is the answer B
LolHahaha yes. the "chalky" hints towards carbonate. And its the only one insoluble. Didnt know that CaCl2 is soluble
help me out!! why not B and answer is C. Why?
isn't it C?
becuz reactivity depends upon bond length not bond energy...View attachment 43749help me out!! why not B and answer is C. Why?
nope! that's prob. muje bhi C mila
Than why not B
then wat's the ans?
Dthen wat's the ans?
bcuz it's talkng abt the bong energy
i didn't get!! in book it is written na in table that fluorine has strong bond and iodine has weak bond so i thought B in ans but i didn't get what you said
above doubts
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