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191. Which of the following compounds corresponds vant’t Hoff factor to be equal to 2 for dilute solution?

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192. Molarity of a solution containing 1 g NaOH in 250 mL of solution is

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193. A molal solution is one that contains one mole of a solute in

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194. Define mole fraction of a component in a solution.

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195. State Henry's law about the solubility of a gas in a liquid.

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196. Define an ideal solution.

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197. Why is Van’t Hoff factor introduced in the equation for colligative properties of solutions?

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198. How is osmotic pressure dependent upon number of moles of solute?

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199. Define Van’t Hoff factor. What is its value for a non-electrolytic solution?

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Answer:

(i) Liquid in liquid: Ethanol dissolved in water

(II) Gas in gas : Mixture of oxygen and nitrogen gases

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