Reagent solutions should be kept in tightly stoppered glass bottles (except where they are … amount (usually one drop) of 0.1 mol l-1 sodium thiosulphate solution. … 1. Mix 100 ml of the sample with two or three drops of phenolphthalein indicator in the … If the pH is not less than 2 after the addition of acid, more nitric acid.
Answer
Yes
Explanation
Ok so i am I going on a break and I am going back and I am not working eyuiooiyttrt
Answer:
ok
Explanation:
Reagent solutions should be kept in tightly stoppered glass bottles (except where they are … amount (usually one drop) of 0.1 mol l-1 sodium thiosulphate solution. … 1. Mix 100 ml of the sample with two or three drops of phenolphthalein indicator in the … If the pH is not less than 2 after the addition of acid, more nitric acid.