Chemistry, 20.07.2019 20:50 joel53

The density of a 50% solution of naoh is 1.525 g/ml. what volume of a solution that is 50% by weight naoh is required to make 0.4 liter of 0.1m naoh solution?

Answers: 1

Show answers

Answers

We consider that the 50% given in this item is by volume. Molarity is the unit of concentration that takes into account the number of moles of the solute and the number of moles of the substance.

number of moles of NaOH = (0.1 moles / L)(0.4 L)
n = 0.04 moles of NaOH

If we are to take the basis of 1 mL of 50% NaOH solution,

(1 mL solution)(1.525 g/mL)(0.50) = 0.7625 g
The number of moles is,
0.7625 g NaOH x (1 mol / 40 g) = 0.01906 moles of NaOH

volume of solution required = (0.04 moles of NaOH)(1 mL solution / 0.01906 moles of NaOH)

volume of solution required = 2.09 mL

2.09 mL

Answer from: kaieshaweston

The volume of NaOH required to make 0.4 L of 0.1 M solution is 2.09 ml.

Explanation:

Let us assume the 50% of the solution to be by volume.

Molarity of solution = 0.1 M

O.1 M solution means, 0.1 moles of solute in 1L of solution.

Moles of NaOH in 0.4 L solution = 0.1 $\times$ 0.4

Moles of NaOH = 0.04

Density = $\rm \frac{mass}{volume}$

Mass of 1 ml of 50% NaOH solution = $\rm Density\;\times\;Volume\;\times\;Dilution$

Mass of 1 ml 50% NaOH solution = 1.525 $\times$ 1 $\times\;\frac{50}{100}$

Mass of 1 ml of 50% NaOH solution = 0.7625 g

Moles of NaOH in 1 ml of 50% NaOH solution = $\rm \frac{0.7625}{40}$

Moles of NaOH in 1ml of 50% NaOH solution = 0.01906 moles/liters

Molarity = $\rm moles\;\times\;\frac{1000}{volume (ml)}$

Volume = $\rm moles\;\times\;\frac{1000}{Molarity}$

Volume of NaOH = $\rm 0.01906\;\times\;\frac{1000}{0.1}$ ml

Volume of NaOH = 2.09 ml

The volume of NaOH required to make 0.4 L of 0.1 M solution is 2.09 ml.

For more information, refer the link:

link

Answer from: Quest

answer: $2c_5h_5+1fe\rightarrow 1fe(c_5h_5)_2$

the reaction is type of combination reaction.

explanation:

$? c_5h_5+? fe\rightarrow ? fe(c_5h_5)_2$

on the product side, there are 2 molecules of $c_5h_5$ bonded to fe which means one atom of fe are combined two molecules of $c_5h_5$ . so, balanced chemical equation becomes :

$2c_5h_5+1fe\rightarrow 1fe(c_5h_5)_2$

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

$a+b\rightarrow ab$

Answer from: Quest

consider the reaction below.

no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

Another question on Chemistry

Chemistry, 22.06.2019 09:30

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Answers: 3

Answer

Chemistry, 22.06.2019 12:30

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Answers: 1

Answer

Chemistry, 23.06.2019 07:00

If you used the method of initial rates to obtain the order for no2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 m, 0.100 m, & 0.050 m no2.

Answers: 3

Answer

Chemistry, 23.06.2019 07:30

Assume that 13.5 g solid aluminum (al) react with hcl to produce solid aluminum chloride (alcl3) salt and gaseous hydrogen (h2) at standard temperature and pressure.

Answers: 1

Answer

You know the right answer?

The density of a 50% solution of naoh is 1.525 g/ml. what volume of a solution that is 50% by weight...

Questions