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To **prepare a molar solution**, you follow a clear step-by-step process based on the *definition of molarity*:
[
M = \frac{\text{moles of solute}}{\text{liters of solution}}
]
🔹 Steps to Prepare a Molar Solution
-
**Determine the desired molarity (M)**
Decide the concentration you need — for example, a 1.0 M NaCl solution.
-
**Calculate the moles of solute required**
[
\text{moles of solute} = M \times \text{volume of solution (in liters)}
]
Example: To make **1.0 L of a 1.0 M NaCl** solution → need **1.0 mol NaCl**.
-
**Convert moles to grams**
Use the molar mass of the solute:
[
\text{mass (g)} = \text{moles} \times \text{molar mass (g/mol)}
]
For NaCl (58.44 g/mol):
( 1.0 mol \times 58.44 g/mol = 58.44 g )
-
**Weigh the solute accurately**
Use a balance to weigh out 58.44 g NaCl.
-
**Dissolve the solute**
Transfer the solute to a **volumetric flask** or beaker.
Add **distilled water** to dissolve it (not to the full volume yet). Stir until completely dissolved.
-
**Dilute to the final volume**
After the solute dissolves, add more distilled water **until the total volume equals the desired final volume** (e.g., up to the 1 L mark in the flask).
-
**Mix thoroughly**
Stopper the flask and invert it several times to ensure uniform mixing.
✅ **Example Summary:**
To make **1 L of 1 M NaCl solution**:
-
Calculate: ( 1 mol/L × 1 L = 1 mol )
-
Convert to grams: ( 1 mol × 58.44 g/mol = 58.44 g )
-
Weigh 58.44 g NaCl.
-
Dissolve in ~800 mL water.
-
Add water up to the 1 L mark.
-
Mix thoroughly.
Would you like me to show how to prepare a specific molar solution (e.g., 0.5 M HCl or 2 M NaOH)?
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What else can I help you with?
Why you can use 4.9035 g K2Cr2O7 to prepare 0.1 n solution?
To prepare a 0.1 N solution of K2Cr2O7, you need to calculate the molar mass of K2Cr2O7 and use the formula for normality. By dividing the given weight by the molar mass, you can determine the number of moles present, and then calculate the normality using the volume of the solution.
How many grams of CoCl2 6H2O are needed to prepare 50.0ml of a 0.30M CoCl2 solution?
To determine the mass of CoCl2 6H2O to prepare a 0.30M solution in 50.0ml, we first calculate the molar mass of CoCl2 6H2O. The molar mass is 237.93 g/mol, so for a 0.30M solution in 50.0ml, we can use the formula: mass = molarity x volume (L) x molar mass. Therefore, the mass of CoCl2 6H2O needed is 3.57 grams.
How do you prepare 0.2M of anhydrous of sodium thiosulphate?
To prepare 0.2M solution of anhydrous sodium thiosulfate (Na2S2O3), you dissolve 24.6g of anhydrous Na2S2O3 in distilled water and dilute it to 1 liter. This is the molar mass method, where molar mass of Na2S2O3 is 158.10 g/mol.
How many grams of KCl is needed to make 2 molar solution in 1 liter of water?
To prepare a 2 M solution of KCl in 1 liter of water, you would need to dissolve 149.5 grams of KCl. This is because the molar mass of KCl is approximately 74.5 g/mol, and 2 moles of KCl are needed to prepare a 2 M solution in 1 liter of water.
How do you make a 0.1 molar solution if you had a 1.0 molar solution to start with?
To make a 0.1 molar solution from a 1.0 molar solution, you would dilute the original solution by a factor of 10. For example, you could mix 1 part of the 1.0 molar solution with 9 parts of solvent (like water) to achieve a final concentration of 0.1 molar.
How do you prepare the molar solution of K2Cr2O7?
Dissolve 294,185 g of potassium dichromate in 1L demineralized water.
Why you can use 4.9035 g K2Cr2O7 to prepare 0.1 n solution?
To prepare a 0.1 N solution of K2Cr2O7, you need to calculate the molar mass of K2Cr2O7 and use the formula for normality. By dividing the given weight by the molar mass, you can determine the number of moles present, and then calculate the normality using the volume of the solution.
How many grams of CoCl2 6H2O are needed to prepare 50.0ml of a 0.30M CoCl2 solution?
To determine the mass of CoCl2 6H2O to prepare a 0.30M solution in 50.0ml, we first calculate the molar mass of CoCl2 6H2O. The molar mass is 237.93 g/mol, so for a 0.30M solution in 50.0ml, we can use the formula: mass = molarity x volume (L) x molar mass. Therefore, the mass of CoCl2 6H2O needed is 3.57 grams.
How much glucose powder in .5 of water for a 1 molar solution?
To prepare a 1 molar solution, you would need to dissolve 180 grams of glucose powder in enough water to make a final volume of 0.5 liters.
How do you prepare 0.2M of anhydrous of sodium thiosulphate?
To prepare 0.2M solution of anhydrous sodium thiosulfate (Na2S2O3), you dissolve 24.6g of anhydrous Na2S2O3 in distilled water and dilute it to 1 liter. This is the molar mass method, where molar mass of Na2S2O3 is 158.10 g/mol.
How many grams of KCl is needed to make 2 molar solution in 1 liter of water?
To prepare a 2 M solution of KCl in 1 liter of water, you would need to dissolve 149.5 grams of KCl. This is because the molar mass of KCl is approximately 74.5 g/mol, and 2 moles of KCl are needed to prepare a 2 M solution in 1 liter of water.
How do you prepare molar solutions of iron III sulfate?
To prepare a molar solution of iron(III) sulfate, first calculate the molar mass of Fe2(SO4)3. Then, dissolve the calculated mass in a known volume of solvent, typically water, to achieve the desired molarity. Finally, ensure complete dissolution and accurate volume measurement for a precise molar solution.
How do you prepare 1 molar iodoacetamide solution?
What volume do you want to make. To make 1 liter, you take the 185 g (the molar mass) and dissolve in enough solvent to make the final volume 1 liter.
How do you make a 0.1 molar solution if you had a 1.0 molar solution to start with?
To make a 0.1 molar solution from a 1.0 molar solution, you would dilute the original solution by a factor of 10. For example, you could mix 1 part of the 1.0 molar solution with 9 parts of solvent (like water) to achieve a final concentration of 0.1 molar.
How would you prepare a 1 mole solution of lactose?
Find out the molecular weight of LactoseAdd that many grams of Lactose into a 1000ml volumetric flaskMake up the volume to 1000ml with waterYour 1 Molar solution of Lactose is ready---------------The molar mass of lactose is 342,3 g/mol; the solubility of lactose is 216 g/L at20 0C. Consequently you cannot prepare a molar solution of lactose.
What is the molar mass of a solution containing 2000 grams?
Only a compound has a molar mass not a solution.
How many grams of ACLU are needed to make 1 liter of a 1 molar solution?
To prepare a 1 molar (1 M) solution of a substance, you need to know its molar mass. The molar mass of acetic acid (CH₃COOH) is approximately 60.05 g/mol. Therefore, to make 1 liter of a 1 M solution, you would need 60.05 grams of acetic acid. If you meant a different substance by "ACLU," please specify for an accurate calculation.
