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What is an antifreeze?...

What is an antifreeze?

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Antifreeze is a substance which when added to a solvent lowers its freezing point, e.g., ethylene glycol.
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Ethylene glycol is added to water as an antifreeze. It will

Market price for methyl alcohol, ethylene glycol and glycerol are same per kilogram. Which will cost least as antifreeze?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. If the cost of glycerol, glycol, and methanol is same, then the sequence of economy to use these compounds as antifreeze will be

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. 620 g glycol is added to 4 kg water in the radiator of car. What amount of ice will separate out at -6^(@)C ?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. Which of the following is a better reagent for depression in freezing point but not for elevation in boiling point?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH), a fairly volatile liquid that boils only at 65^(@)C, is sometimes used as an antifreeze in automobile radiators. 124 g each of the two reagents glycol and glycerol are added in 5 kg of water of the radiators in two cars. Which of the following statements is wrong? (a)Both will act as antifreeze. (b)Glycol will be better. (c)Glycerol is better because its molar mass is greater than glycol. (d)all of these

Ethylene glycol is used as an antifreeze agent. Calculate the amount of ethylene glycol to be added to 4 kg of water to prevent it from freezing at -6^@C . (K_f " for " H_2O = 1*85 K "mole"^(-1) kg)

Ethylene glycol is used as an antifreeze agent. Calculate the amount of ethylene glycol to be added to 4 kg of water to prevent it from freezing at -6^(@)C.(K_(f)" for "HH_(2)O=1.85" K mol"^(-1)"kg")

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ICSE-SOLUTIONS-EXERCISE (PART-II Descriptive Questions) (VERY SHORT ANSWER QUESTIONS)
  1. Why is boiling point of a solvent elevated upon the addition of a non...

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  2. Why is freezing point depressed when a non-volatile solute is added t...

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  3. What is an antifreeze?

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  4. Define molal elevation constant or ebullioscopic constant.

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  5. Define cryoscopic constant.

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  6. Why is osmotic pressure considered as colligative property?

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  7. What are isotonic solutions ?

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  8. Hypotonic and Hypertonic solution

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  9. Why NaCl solution freezes at lower temperature than water but boils a...

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  10. Why does molality of a solution remains unchanged with change in temp...

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  11. Why is the cooking temperature in pressure cooker higher than that in...

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  12. Solution A is obtained by dissolving 1 g of urea in 100 g of water an...

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  13. Which of the following solutions shows positive deviation from Raoult'...

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  14. When is the value of van't Hoff factor more than one?

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  15. Give one example each when van't Hoff factor is 2 and (1)/(2).

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  16. How is that the boiling points of the following solutions in water ar...

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  17. Mention a large scale use of the phenomenona of reverse osmosis.

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  18. What is the sum of mole fractions of all the components in a three-co...

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  19. State Raoult's law for a solution of volatile liquids.

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  20. Differentiate between molarity and molality of a solution .How can we ...

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