At three different temperatures, T1, T2, and T3, the molecules in a liquid crystal align in these ways:

(b) Which is the highest of these three temperatures? [Section 11.7]

Video transcript

hi everyone for this problem. It reads given the alignment of the molecules in a liquid crystal for three different temperatures, which of the following is true. Okay, so we want to know which is true and we have an alignment of three different types of molecules and it looks like the answer choices are hinting at temperature here. So we're looking at alignment of the molecules and temperature. And we see that that the molecules are aligned differently in each. Some are ordered and some are not ordered are less ordered than the rest. So one thing we need to remember when it comes to order and temperature is that least order equates to higher temperature and more order equates to lower temperature. Okay, so just looking here, we can see that T three is the most ordered. We see that T two is least ordered, And T one is in the middle. Okay, so looking at that, let's look at our answer choices. The alignment for anti choice. A. The alignment of the molecules at T one has the highest temperature. Okay, so let's go ahead and rank these. Okay, so we see that this one is not going to be true. Okay, because It does not have the least order. T one does not have the least order. So it can't have the highest temperature be the alignment of the molecules at T2 has the highest temperature. So T2 has the least order. And we said whatever has the least order has the highest temperature. Alright, so here we can see that answer choice. B is going to be correct, But let's take a look at the rest. See the alignment of molecules at T3 has the highest temperature. T three is the most ordered. Okay, so this one is not going to be correct. And d the alignment of the molecules at T one, T two, and T three have equal temperature. This is not true because their orders are all different, so this is not correct. Alright, so that leaves us with anti choice be the alignment of the molecules at T two has the highest temperature, and that is correct because it has the least order. Okay, so that's it for this problem. I hope this was helpful.