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Refer to Figure 1 determine whether each of the given amounts of solid will completely

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 35P Chapter 13

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 35P

Problem 35P

Refer to Figure 1 determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature.

(a) 30.0 g KClO3 in 85.0 g of water at 35 °C

(b) 65.0 g NaNO3 in 125 g of water at 15 °C

(c) 32.0 g KCl in 70.0 g of water at 82 °C

Figure 1 Solubility of some ionic solids as a function of temperature

Step-by-Step Solution:
Step 1 of 3

Problem 35P

Refer to Figure 1 determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature.

(a) 30.0 g KClO3 in 85.0 g of water at 35 °C

(b) 65.0 g NaNO3 in 125 g of water at 15 °C

(c) 32.0 g KCl in 70.0 g of water at 82 °C

Figure 1 Solubility of some ionic solids as a function of temperature

Solution: Here, we are going to identify if the given amounts of solid will dissolve completely in the given amount of water at the indicated temperature.

Step1:

Solubility of a substance is its maximum amount that can be dissolved in a specified amount of solvent. It depends upon the nature of solute and solvent as well as temperature and pressure.

Step2:

  1. From figure 1, it is clear that the solubility of KClO3 at 35oC is about 11 g per 100 g of water.

Thus, 30.0 g of  KClO3 will not dissolve in 85.0 g water at 35oC.

     b)        From figure 1, it is clear that the solubility of NaNO3 at 15oC is about 85 g per 100 g of

water.

Thus, 65.0 g of  NaNO3 will completely dissolve in 125 g water at 15oC.

    c)        From figure 1, it is clear that the solubility of KCl at 82oC is about 51 g per 100 g of

water.

So, for dissolving 32.0 g of KCl, amount of water required = (100/51) x 32 = 63 g water

Thus, 32.0 g of  KCl will completely dissolve in 70.0 g water at 82oC.

                                        ------------------------------

Step 2 of 3

Chapter 13, Problem 35P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Refer to Figure 1 determine whether each of the given amounts of solid will completely