how will you make 0.1M of h2so4 given the stock percentage as 98?
Answers
Answer:
The molar mass of sulfuric acid is 98.079 g/mol, so 0.1 moles of sulfuric acid has a mass of 9.8079g. The density of 98% sulfuric acid is 1.84 g/cubic centimetre. This means you have to measure out either 9.8079 grams or 5.33 cubic centimetres (to 3 s.f.) of the 98% sulfuric acid, and add the sulfuric acid slowly to 990.1921 grams of water in a fume hood. Wear safety glasses, a lab coat, and protective gloves.
Never add water to acid. The acid will react with the water in a vigourous exothermic reaction, which can cause the water to boil, and the acid can splash onto your skin. Any splashed sulfuric acid can immediately start burning skin or clothing. Do not use a strong base to neutralise any spilt acid anywhere, because the neutralisation reaction is also exothermic. Use large amounts of running water to wash off acid when it gets on your skin, the amount of water can absorb the heat produced. If acid gets into clothing, remove the contaminated clothing immediately and thoroughly wash any underlying skin.