Molarity Practice Problems

This chemistry video tutorial explains how to solve common molarity problems. It discusses how to calculate the concentration of a solution given the mass in grams, given moles and volume in Liters, given grams and mL of solution, and how to find the molarity given the density and volume of the solution. This video contains plenty of examples and practice problems.
Stoichiometry Practice Test:
• How To Solve Stoichiom...
Solute, Solvent, & Solution:
• Solute, Solvent, & Sol...
Strong & Weak Electrolytes:
• Identifying Strong Ele...
Molarity Practice Problems:
• Molarity Practice Prob...
Ion Concentration In Solutions:
• Ion Concentration in S...
Dilution Problems:
• Dilution Problems, Che...
___________________________________
Types of Chemical Reactions:
• Types of Chemical Reac...
Solubility Rules:
• Solubility Rules
Predicting The Products of Reactions:
• Predicting The Product...
Activity Series of Metals:
• Activity Series of Met...
Will This Reaction Occur?
• Chemistry - Will The R...
Predicting Products of SR Reactions:
• Predicting Products of...
___________________________________
Double Replacement Reactions:
• Introduction to Double...
Net Ionic Equations:
• Precipitation Reaction...
Writing Chemical Equations From Words:
• How To Write Chemical ...
Solution Stoichiometry:
• Solution Stoichiometry...
Molarity & Dilution Problems:
• Molarity Dilution Prob...
Acid Base Neutralization Reactions:
• Acid Base Neutralizati...
____________________________________
Acid Base Titration Problems:
• Acid Base Titration Pr...
Mixture Problems:
• Mixture Problems
Calculating Oxidation Numbers:
• How To Calculate Oxida...
Oxidation and Reduction Reactions:
• Oxidation and Reductio...
Balancing Redox Reactions:
• Half Reaction Method, ...
Ideal Gas Law Problems:
• Ideal Gas Law Practice...
___________________________________
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections

[@TheOrganicChemistryTutor]

Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Videos & Worksheets: www.patreon.com/MathScienceTutor/collections General Chemistry 1 Review: bit.ly/3DNmZqb PDF Worksheet - 160 Questions: bit.ly/37SVLn6

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[@porterwake3898]

Because you weren't paying attention. I literally do this exact same thing in the class and kids bitch and bitch. I say desired on top, cancelled on the bottom. Molarity is mols per liter and you can use it as a conversion factor. I give them mol maps to show them EXACTLY what to do. You don't pay attention.

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I am so proud I solved all of the problems here myself! I know it's not that hard to a lot of people, but this is a huge thing for me as I struggle with Chemistry.

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what’s sad is that this is supposed to be the easiest part of my test today 💀

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Thank you so much. I didn’t even understand this till you taught me. Thanks!!!

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Helpful in this pandemic times where teachers can't conduct their lessons face to face and students tend to self study. I'm learning a lot from this video. Thank's for sharing, helping and teaching.

[@georgesadler7830]

Professor Organic Chemistry Tutor, thank you for a step-by-step analysis of Molarity Practice Problems in AP/General Chemistry. The practice problems are an excellent way to fully learn about molarity problems in Chemistry. This is an error free video/lecture on KZbin TV with the Organic Chemistry Tutor.

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I like this video because you broke down molarity with beautiful examples

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[@shujriz2286]

@15:20 cannot we find molarity of the solution and multiply it with the subscript (which is three for chlorine here,) like in the previous question to this we did when the molarity of the salt was given and concentration of ions were asked and we did the calculations the same way.

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[@mothbatross]

Hello! correct me if I'm worng but in No. 1 (c) isn't 700 mg supposed to be converted to grams? I'm sorry, I didn't use the traditional dimensional analysis method but I computed it one-by-one. :((

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How did he find/set up the equation at 19:02? knowing could really help me understand

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It's dimensional analysis. Basically, grams in the bottom cancel with grams at the top. You could set up the conversion factor in such a way that it gives you the result in the desired units.

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Why did you write the answer of question 1c as a decimal? I had it perfectly fine just the same but without the decimal. Is that a problem ?

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I know this isn't a huge deal but be careful with the placement of the signs for the charges. At 10:56, I was a little confused for a sec!!! Great video!!!

[@HB-oo9ty]

There is slight inaccuracy in problem 2. 50 mL ethanol + 400 mL water is not 450 mL solution. Ethanol has smaller molecules than water so when they are mixed ethanol occupies the space left by water molecules.

[@5kunk157h35h17]

I get a bit confused by these different steps. Sometimes it says x before something but instead you divide by it. Sometimes there is a divided by but you multiply. Is there any video that explains the process more thoroughly, like explaining why you (as in around 8:50) start with 50 ml / 1 rather than just 50 ml. Many of these little things seem odd to me. It would be great with a video that explains the framework in detail in order to remember it all more easily.

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[@chiraqg1374]

This practice problem is confusing me and I’m wondering if anyone can help me: when 34.5mL of 1.300M potassium carbonate solution reacts with 15.4mL of 2.900M hydrochloric acid what is the mass of gas that is produced?

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[@leonpowell6704]

Are you supposed to round Molarity to the correct sig figs?

[@RopaNyahwema]

Good day sir , I hope you are well .For question 5, why did you calculate the mass of NH4CL and not the mass of AlCl3 ?

[@brd8764]

Unit. Measure. Broken units. Mole per litre. Unit of molar concentration.

[@Tay7r]

Are you supposed to make it neutral charge? Example is sodium and oxygen, sodium is + charge and oxygen is 2-. So shouldn't you multiply sodium by two and use that in the grams to mols conversion?

[@al1.x.s]

Watching this an hour before my final ❤❤❤

[@julian7434]

Same

[@Will-wb6xl]

at 9:30 ... Isn't the answer just 1.9 M? since the measurement with the least significant figures only has 2 sig figs?

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Bless you

[@RemiliaVampire]

how can u just flip a fraction at 20:33? where did that come from!?

[@tragedy2722]

Can someone help me how many moles of urea are needed to form 0.30 m solution using 225 grams water

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Jet johhh......😊 sir

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Thank you so muchhhhhhhhhhhhhh

[@pierrenofies5272]

in 4:00 i don't get it, why does the answer is 6M?

[@kanzertwo5654]

How did you get 40g NaOH?

[@olaoluwakiitan3613]

Why was the volume in the last question given in ml not L?

[@jxrt4224]

can someone help me on the B part, i didnt get the part where he converts the 60g of NaOH

[@poseidonbeats8465]

the 60g is given you divide by the molar mass. You add up the molar masses of Na O and H

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I have my finals tmrw im scareder

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i watch these videos and i understand them but when i see the test my brain does not comprehend the questions and i dont know how to solve them anymore....i h8 my lyf

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Yup, same 😭