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what does addition of potassium nitrate to ice results in??why and how?a)increase in melting pointb)decrease in melting pointc)change in colour of iced)both (a) &(b)(please give the answer with explaination)
Asked by Deep Raj(student) , on 18/4/12


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EXPERT ANSWER

Option B is the correction answer because depression in freezing point depends upon the number of atom, ion or molecules present in the solution which decreases the polarity between solvent molecules.  For example: Addition of NaCl to water decreases its freezing point to -9 ° C i.e. at this temperature water will melt also. 

Posted by cp_gupta17...on 19/4/12

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