Answered

Get expert advice and community support for your questions on IDNLearn.com. Discover prompt and accurate answers from our community of experienced professionals.

5. a. How many mol of sodium chloride, NaCl, are required to prepare 0.2 L of a 3 M solution?

b. How many grams is this (hint: molar mass of NaCl =
U?

Sagot :

Ardni313idn

a. 0.6 moles

b. 35.1 grams

Further explanation

Given

Volume = 0.2 L

Molarity = 3 M

Required

mol of Sodium chloride

Solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

Input the value :

n = M x V

n = 3 M x 0.2 L

n = 0.6 moles

Mass of NaCl :

= mol x molar mass of NaCl

= 0.6 x 58.5 g/mol

= 35.1 grams

We are delighted to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. Thanks for visiting IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more helpful information.