Question

Який об’єм (мл) 96 %-ного розчину сульфатної кислоти H2SO4 (r = 1,84 г/мл) потрібно взяти для приготування 1 л 0,25 н. розчину?

Answer 1

Ответ:

6,935 мл

Объяснение:

m(H2SO4)=(0.25/2)*98=12,25 грамм

V(H2SO4)=12.25/(0.96*1.84)=6,935 мл

Answer 2

Calculating the Volume of 96% Sulfuric Acid Solution Needed

To calculate the volume of 96% sulfuric acid solution needed to prepare 1 liter of 0.25N solution, we can use the formula:

N1V1 = N2V2

Where: - N1 = normality of the concentrated solution - V1 = volume of the concentrated solution - N2 = normality of the diluted solution - V2 = volume of the diluted solution

Given Values

- N1 = 96% (or 1.84 g/ml) - V1 = volume of the concentrated solution (to be calculated) - N2 = 0.25N - V2 = 1 liter

Calculation

We can rearrange the formula to solve for V1: V1 = (N2 * V2) / N1

Substitute the given values: V1 = (0.25 * 1) / 1.84

Let's calculate the volume of the concentrated solution needed.