We'll work on problem 94 from Chapter 13. This problem were asked to rank three aqua solutions Ah, in order of increasing ah collective properties First osmotic pressure boiling point freezing point in vapor pressure specifically at 50 degrees Celsius. So our three solutions are I 0.1, and Lorca's and morality sodium nitrate number two is 0.1 m glucose and third is 0.1 in calcium chloride, and these are all awkward solutions. So if you are given equal masses than we would need to take into account the identity of the compound because the molar masses will be different and so result in different particles. But here were given the exact same number of moles because morality takes into account moles. So what we need, uh, really plays the the only role that will determine this is the Vantaa factor or I, which would be to for sodium nitrate, one for glucose and three for calcium chloride, based on how they associate in solution. So, in part, A, B and C of A, B, C and D. We need to rank the collective properties, uh, which are osmotic pressure boiling. Point freezing point and vapor pressure and 50 degrees Celsius. So we want to rank it in order of increasing each of these properties. So for a, uh, osmotic pressure is going to increase According to this equation, eyes equal to M I R t So M is fixed for all of them are Tia's are constants. So to rank them, uh, the lowest one would be, too, because it has a value I value of one next highest would be number one sodium nitrate and highest would be calcium chloride for boiling point. We have a similar expression, which depends on I. So we know that boiling point will increase with the number of particles. So we have the same trend to than one, then three. So 213 is the order of increasing effective collective properties. However, when we're looking at freezing point where we want to put it in increasing, and so we know that the solution that's all you'd depress is the freezing point. So we need to reverse our order. So the lowest freezing point is three because it's lowered the most based on the identity of the number of particles from the Salyut. So we just put the reverse order, um, Inter to put the identity of being, uh, saw you. And then vapor pressure eyes going to behave the same way as the 1st 2 days so it will increase the more particles you have so again, to Roman numeral 21 and three is de correct order.