Answer to Question #291118 in General Chemistry for Johnrey

Question

Lean meat is marinated and added moisture through brining. In brining, a mixture of salt and water is used to soak the meat for a few hours or days before cooking.

Basic Brine: Make 3880 grams brine for 2.72 kg of meat

Procedure:

a. Mix 250 grams of salt (NaCl) with 3880 grams of water.

b. If you make sweet brine, mix 250 grams of sugar (C12H22O11) to solution of salt and water.

Problem: What is the molal concentration of the brine solution (250 g salt + 3880 g water)?

Answer 1

First find the mass in 1000g solute.

$=\frac{1000×250}{3880}=64.43g$

Molality is the number of moles per 1000g solvent.

$=\frac{64.43}{23+35.5}=1.1$m