Question

Сколько грамм NaOH необходимо использовать, для приготовления 500 мл 0,1М раствора? Покажите решение!

Answer 1

вот вроде правильно .!!

Answer 2

Calculating the Amount of NaOH Needed

To calculate the amount of NaOH needed to prepare a 500 ml 0.1M solution, we can use the formula:

Molarity (M) = moles of solute / liters of solution

First, we need to calculate the moles of NaOH required for the solution. Then, we can convert the moles to grams using the molar mass of NaOH.

Calculating Moles of NaOH

Using the formula:

Moles = Molarity x Volume (in liters)

We can calculate the moles of NaOH required:

Moles = 0.1M x 0.5L Moles = 0.05 moles

Converting Moles to Grams

The molar mass of NaOH is approximately 40 g/mol. We can use this to convert moles to grams:

Grams = Moles x Molar Mass Grams = 0.05 moles x 40 g/mol Grams = 2 grams

So, 2 grams of NaOH are needed to prepare a 500 ml 0.1M solution.

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