How many grams of NaOH are there in 187 grams of an aqueous solution that is 7.06 % by weight NaOH.
7.06% w/w NaOH means 7.06g NaOH in 100 g solution. So in 187 g there will be
7.06g NaOH x (187/100) = ?
or if you want to do it by the factor method it is
187 g solution x (7.06g/100g) = ?
1.79
To determine the number of grams of NaOH in the solution, we need to use the percentage by weight of NaOH and the total weight of the solution.
Step 1: Convert the percentage to a decimal.
Percentage by weight of NaOH = 7.06% = 7.06/100 = 0.0706
Step 2: Calculate the weight of NaOH in the solution.
Weight of NaOH = Percentage by weight of NaOH × Total weight of the solution
Weight of NaOH = 0.0706 × 187 grams
Weight of NaOH ≈ 13.1682 grams (rounded to four decimal places)
Therefore, there are approximately 13.1682 grams of NaOH in 187 grams of the aqueous solution.