why the NaCl and kno3 are used to lower the melting point of ice
Answers
when you add ions to the ice, its melting point goes (i.e. freezing point of water) to -9 to -19 degree Celsius, depending on the amount of ions. The reason behind that is, when water becomes ice its water molecules re-arrange to specific shapes (see the link for the video at bottom). After we put ions to it, ions disturb that shape as they come in-between the water molecules. If water wants to be ice again, it should be like -9 degree Celsius because of these ions disturbing them to rearrange as a solid.
Answer:
Yes, Nacl & NaNo3 is used to lower the melting point of ice.
Explanation:
Because, these salts lower the vapor pressure of H2O. Due to lowering of vapor pressure, solution freezes below the freezing point of water. Hence, this mixture is used as freezing mixture. For example in an ice cream machine.