Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 14: Problem 9

Lowest temperature is reached by using (a) \(\mathrm{CaCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\) (b) Acetone \(+\) dry ice (c) \(\mathrm{NH}_{4} \mathrm{Cl}\) (d) Ether + dry ice

Short Answer

Expert verified
The answer is (b) Acetone + dry ice. When combined, these two substances complete an endothermic reaction that absorbs heat from the surroundings, reducing the temperature, and has a low freezing point, allowing it to remain in liquid form at lower temperatures.

Step by step solution

01

Identify the Nature of Substances

First, identify whether the given substances are endothermic or exothermic. Endothermic substances absorb heat, thus lowering the temperature. Exothermic substances release heat, therefore increasing temperature.
02

Understand the Freezing Point

Next, research the freezing points of the mentioned substances. Lower freezing points mean that the substance can achieve a lower temperature without becoming solid.
03

Compare Temperatures

After gathering this information, compare the temperatures of the substances. The one with the most endothermic nature and lowest freezing point will reach the lowest temperature.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In the phase diagram of a one-component system, which of the following statements is correct? (a) The melting point of the solid increases with increases of pressure. (b) The solid can be in equilibrium with the vapour only at a temperature on or below the triple point. (c) The solid, if heated at 1 atm, will sublime. (d) The three lines meet at the critical point.

A compound with an incongruent melting point decomposes on heating into (a) a liquid of the same composition as solid (b) a new solid phase and a solution with a composition different from that of the solid phase (c) a new solid phase and a solution with the same composition as that of the solid phase (d) a solution of fixed composition.

In the phase diagram of a one-component system, which of the following statements is correct? (a) eutectic point (b) congruent point (c) triple point (d) critical point

In terms of number of phases ( \(P\) ), components (C) and degrees of freedom (F), the phase rule is expressed as (a) \(P+C=F+2\) (b) \(F=P+C-2\) (c) \(P+F=C+2\) (d) \(P-F=C+2\)

The number of phases of a mixture of four gases enclosed in a container are (a) 4 (b) 3 (c) 1 (d) 0
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Organic Chemistry

Read Explanation

Chemical Reactions

Read Explanation

Chemical Analysis

Read Explanation

Chemistry Branches

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free