Answered

IDNLearn.com provides a collaborative platform for sharing and gaining knowledge. Find the answers you need quickly and accurately with help from our knowledgeable and dedicated community members.

A solution is prepared by dissolving 25.0 mL ethanol, CH3CH2OH (d=0.789 g/mL), in enough water to produce 250.0 mL solution. What is the molarity of ethanol in the solution?

Sagot :

Ardni313idn

The molarity = 1.716 M

Further explanation

Given

25 ml ethanol

d = 0.789 g/ml

250 ml solution

Required

The molarity

Solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]

mass of ethanol :

= 25 ml x 0.789 g/ml

= 19.725 g

mol ethanol :

= 19.725 g : 46 g/mol

= 0.429

The molarity :

= 0.429 : 0.25 L

= 1.716 M

Abidemiokinidn

The molarity of ethanol in the solution is 1.716M

What is the molarity of a solution?

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

Determine the mass of ethanol :

Mass of ethanol = 25 ml x 0.789 g/ml

Mass of ethanol = 19.725 g

Determine the moles of ethanol

Moles = Mass/Molar mass

Moles = 19.725 g/46 g/mol

Moles of ethanol = 0.429moles

Calculate the molarity using the formula below;

Molarity = Moles/Volume

Molarity = 0.429/0.25 L

Molarity = 1.716 M

Hence the molarity of ethanol in the solution is 1.716M

Learn more on molarity here: https://brainly.com/question/17138838

Your participation means a lot to us. Keep sharing information and solutions. This community grows thanks to the amazing contributions from members like you. IDNLearn.com has the solutions to your questions. Thanks for stopping by, and see you next time for more reliable information.