1) Describe how you would dilute 10mL of concentrated sulfuric acid to 100mL.
2) Describe how you would make 500 mL of 0.1 mol L sulfuric acid form 2 mol L^-1 sulfuric acid.
1. Add some water to a 100 mL volumetric flask, add 10 mL of concd H2SO4 DROP BY DROP to the water in the flask, swirling with each drop. If the solution gets too hot let it cool. Add the remainder, then dilute with distilled wter to the mark on the flask.
2. What is your starting material. You need either a bottle of concd H2SO4 (if you have that you will need the density of the solution) OR you will need a stock solution of H2SO4.
So sorry for question two. I mistyped 'from' as formed.
1) To dilute 10mL of concentrated sulfuric acid to 100mL, you would follow these steps:
Step 1: Prepare the dilution vessel: Take a clean and dry container, such as a graduated cylinder or a beaker, and ensure it is free of any impurities.
Step 2: Add the concentrated sulfuric acid: Using a pipette or a dropper, carefully transfer 10mL of the concentrated sulfuric acid into the dilution vessel. Be cautious while handling concentrated sulfuric acid as it is highly corrosive and can cause severe burns.
Step 3: Add distilled water: Slowly add distilled water up to the 100mL mark on the dilution vessel. It is essential to add water slowly to avoid splashing and potential hazards. Pouring the water into the acid can cause an exothermic reaction, so proceed with caution.
Step 4: Mix thoroughly: Gently stir the mixture using a glass rod or magnetic stirrer to ensure proper mixing of the acid and water. Make sure you use appropriate safety precautions, such as gloves and goggles, while handling the diluted acid.
2) To make 500 mL of 0.1 mol L sulfuric acid from 2 mol L^-1 sulfuric acid, you would need to dilute the concentrated sulfuric acid. Here's how:
Step 1: Calculate the volume of concentrated sulfuric acid needed: To determine how much concentrated sulfuric acid to use, you'll need to use the formula:
Volume of concentrated sulfuric acid = desired volume x desired concentration / concentrated acid concentration
In this case, using the formula:
Volume of concentrated sulfuric acid = (500 mL x 0.1 mol L) / 2 mol L = 25 mL
You'll need 25 mL of concentrated sulfuric acid.
Step 2: Prepare the dilution vessel: Take a clean and dry container, like a volumetric flask, and ensure it is free of any impurities.
Step 3: Add the concentrated sulfuric acid: Using a pipette or a dropper, carefully transfer 25 mL of the concentrated sulfuric acid into the dilution vessel.
Step 4: Add distilled water: Slowly add distilled water into the dilution vessel until it reaches the 500 mL mark on the volumetric flask.
Step 5: Mix thoroughly: Secure the cap or stopper on the flask and gently invert it several times to mix the concentrated sulfuric acid with the water. Ensure the mixture is thoroughly blended.
Please note that working with sulfuric acid requires careful handling and appropriate safety precautions, including the use of gloves, goggles, and a well-ventilated area.