Arrange the coefficients, solve the problem. how much carbon dioxide is required to interact

Arrange the coefficients, solve the problem. how much carbon dioxide is required to interact with 800 g of 20% sodium hydroxide solution?

1) Calculate the mass of pure sodium hydroxide in its solution by the formula:

mass fraction of solute in solution = mass of substance: mass of solution * 100%.

Let’s substitute the initial data into this formula:

20% = x: 800 g * 100%;

x = 20% * 800 g: 100% = 160 (g) NaOH.

2) We write down the reaction equation by signing the known values:

CO2 + 2NaOH -> Na2CO3 + H2O.

Now let’s calculate the required volume of carbon dioxide:

22.4 liters of CO2 react with 80 g of NaOH, and

xl CO2 is needed to react with 160 g of NaOH. Find x:

x = 22.4 * 160: 80 = 44.8 (l).