9 Questions
What is the correct mass of NaOH in grams required to prepare 500 ml of 2.80 M solution?
56.0 g
How would you prepare 250 ml of a 0.707M NaNO3 solution?
Dissolve 15.02g NaNO3 in 250ml water
How many moles of MgCl2 are present in 60.0 mL of 0.10 M MgCl2 solution?
0.006 moles
How many grams of KOH are present in 35.0 mL of a 5.50 M solution?
22.825 g
What is the molarity of a solution if the mass of NaOH is 40g and the volume is 500 ml?
$M = \frac{40 \times molar ext{ }mass}{500}$
What is the mass of NaOH in grams required to prepare 500 ml of 2.80 M solution?
56.0 g
How would you prepare 250 mL of a 0.707 M NaNO3 solution?
Dissolve 15.02g NaNO3 in 250ml water
How many moles of MgCl2 are present in 60.0 mL of 0.10 M MgCl2 solution?
0.006 moles
How many grams of KOH are present in 35.0 mL of a 5.50 M solution?
96.25 g
Study Notes
Molarity and Solution Preparation
- To prepare a solution, you need to know the molarity (M) and the volume in liters (L) to find the number of moles, and then use the molar mass to find the mass in grams.
NaOH Solutions
- To prepare 500 ml of a 2.80 M NaOH solution, you need to calculate the mass of NaOH in grams required.
- The molarity of a solution can be calculated if the mass of NaOH is 40g and the volume is 500 ml.
NaNO3 Solutions
- To prepare 250 ml of a 0.707 M NaNO3 solution, you need to calculate the mass of NaNO3 in grams required.
MgCl2 Solutions
- The number of moles of MgCl2 present in a solution can be calculated if the volume and molarity are known, such as 60.0 mL of 0.10 M MgCl2 solution.
KOH Solutions
- The mass of KOH in grams present in a solution can be calculated if the volume and molarity are known, such as 35.0 mL of a 5.50 M solution.
Learn about the process of preparing a solution of known molarity using a volumetric flask and solid solute. Understand the steps involved in dissolving the solute and reaching the desired volume.
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