how many grams of NaOH are needed to make a 30% w/w solution using deionized water as the solvent
To determine the grams of NaOH needed to make a 30% w/w (weight/weight) solution, we first need to understand what "30% w/w solution" means. It refers to the concentration of the solute (in this case, NaOH) relative to the total weight of the solution.
To calculate how many grams of NaOH are needed, we need to know the desired weight of the solution. Let's assume we want to make a 100g solution.
Step 1: Calculate the weight of NaOH in the solution:
30% w/w solution means that 30g of NaOH is present in every 100g of the solution.
So, for a 100g solution, the weight of NaOH can be calculated as:
Weight of NaOH = (30/100) * 100g
= 30g
Step 2: Calculate the grams of NaOH needed:
Since the weight of NaOH needed is equal to the weight of NaOH in the solution, we need 30g of NaOH to make a 30% w/w solution.
Therefore, to make a 30% w/w NaOH solution using deionized water as the solvent, you would need 30 grams of NaOH.