Question

how is 5% solution of kmno4 prepared​

Answer 1

Hence to make 5% solution of KMnO4 you will need 7.5 g of KMnO4.

Explanation:

To make a 5% solution of KMnO4 we will use the following formula.

The mass of KMnO4 is 150 grams.

w (KMnO4) = m (KMnO4) / the mass of the solution

w (KMnO4) = m (KMnO4) / m(solution)

5% = m (KMnO4)/ 150 g

5 / 100 = m(KMnO4)/ 150g

m(KMnO4) = 150 x 5 / 100 g

m(KMnO4) = 750 / 100 g

m(KMnO4) = 7.5 g

Hence to make 5 % solution of KMnO4 you will need 7.5 g of KMnO4.