Describe how to prepare a 1M solution of sodium hydroxide from concentrated sodium hydroxide (17.6 M)
First, decide upon how many mL of the diluted solution you want to make; say 1000 mL, then
mL x M = mL x M
1000 mL x 1 M = mL x 17.6 M
Solve for mL on the right. So you would take that many mL of the 17.6 M stuff and add water to the mark in a 1 L volumetric flask. Said another way, add enough water to make 1000 mL of solution. Let's say it calculates to be 50 mL. Note that this is NOT the same as saying take 50 mL of the concn NaOH and add 950 mL water.
Thank you Dr. Bob!
To prepare a 1M solution of sodium hydroxide (NaOH) from concentrated sodium hydroxide (17.6 M), follow these steps:
1. Determine the volume of the 1M solution you want to prepare. Let's say you want to make 1 liter (1000 mL) of the solution.
2. Calculate the amount of concentrated sodium hydroxide required using the formula:
Amount of concentrated NaOH = (Desired Molarity * Desired Volume) / Concentrated Molarity
Plug in the values:
Amount of concentrated NaOH = (1 M * 1000 mL) / 17.6 M = 56.8 mL
So, you need to measure 56.8 mL of the concentrated sodium hydroxide.
3. Transfer the measured volume of concentrated sodium hydroxide to a suitable container, such as a beaker or a volumetric flask.
4. Next, add distilled or deionized water to the container while stirring gently to ensure thorough mixing.
5. Continue adding water until the total volume of the solution reaches 1 liter (1000 mL).
6. Once the desired volume is reached, continue stirring until the solution is well-mixed.
7. It is essential to be cautious while handling sodium hydroxide, as it is a caustic substance. Wear appropriate protective gear, such as gloves and safety goggles, and work in a well-ventilated area.
By following these steps, you can prepare a 1M solution of sodium hydroxide from concentrated sodium hydroxide (17.6 M).