This is mathematically correct. But when it comes to really get results in laboratory then we have various types of purities of NaOH say 95% pure, 93% assay. Then what will be the correct way to find out the right weight or volumes of the NaOH?
10%= 10g NaOH in 100ml total. meaning final volume need to be 100ml. if water is the solvent then since 1g of water= 1ml, 90ml will be correct. but if solvent is not water it will not be 90ml because density of this solvent will be different. this is why it is easiest to add solvent up to the desired final volume in this case 100ml
why to make so complicated. 1% is just 1g/100ml. 2% is 2g/100ml etc... just be aware the 100ml will be the final volume. for 1% solution dont put 100ml then add 1g but instead weight 1 g then add the solvent up to 100ml
10% is 10g of NaOH in 100ml solvent total. meaning don't! put 100ml of solvent and add 10g of NAOH, because in this case the final volume will be slightly over 100ml which will decrease you NaOH concentration
Great video, thank you. I want to prepare a 100 ml 25% v/v glutaraldehyde solution and the glutaraldehyde available is 50% wt% glutaraldehyde in water, MW= 100.12 g/mol, d= 1.106 g/ml. Would I be correct for using C1V1= C2V2. The answer I get is 50 ml of 50% glutaraldehyde in 100 ml to give 25% v/v glutaraldehyde. Thanks
yes c1v1 will work. in short you want to do from 50% to 25% meaning dilution of 2. so if you need 100ml total, just put 50ml of 50% +50 ml of water. the 50% will be diluted to 25%, done
you will use 1g in 99 mL of water to make it a total volume of 100 mL, you will add water to make it 100 ml if it required. you will not dissolve 1 g in 100mL.
Please solve this problem, and answer me please. If 30gm of 0.1% hydrocortisone is mixed with 2.5% of hydrocortisone what is the percentage of hydrocortisone in the final mixture?
MW of NACL is 58.443 g/mol no matter what (Periodic table). what you are asking is the concentration of NaCl in Urine. Hard to say since it will change according you water intake
I have to prepare 50ml of 1% of NaOH So will I be putting the mass of solution value as 50ml or should I keep 100ml only and later should I add 1gram in 50ml or 2g in 50 ml... please help
1%= 1g in 100ml H2O total. so if you want 50ml it will be 0.5 g in 50ml total. Always weight the gram first then add the solvent up to the final volume desired. Not the other way around
you can use any volume to prepare... but its easy to understand according to 100 ml and u can use multiplication method from same calculation for any volume.
This is mathematically correct.
But when it comes to really get results in laboratory then we have various types of purities of NaOH say 95% pure, 93% assay. Then what will be the correct way to find out the right weight or volumes of the NaOH?
Will we go through the C1 V1 = C2 V2 calculation?
1) 1% alum water
2) 2% cupper sulphates water
Please tell this two item weight and volume
There is brown-black residue inside container settled over container base. What is this? Can I use the solution? Plz reply🙏🙏
Good explain
Who to make shodioum hypochlorite at home ? And formula video please.
Mam i have doubt in w/w method. For prepairing 100g,10% solution of NaoH. Dissolve 10g NaoH in 90 ml water is this correct
Yes if you want to prepare 100ml solution, 10%NaOH solution you have a dissolve 10gm of NaOH in 90ml of water
@@engrkhan6742 thank you☺️☺️☺️
@@athiradinesh1918 you welcome 😊
10%= 10g NaOH in 100ml total. meaning final volume need to be 100ml. if water is the solvent then since 1g of water= 1ml, 90ml will be correct. but if solvent is not water it will not be 90ml because density of this solvent will be different. this is why it is easiest to add solvent up to the desired final volume in this case 100ml
why to make so complicated. 1% is just 1g/100ml. 2% is 2g/100ml etc... just be aware the 100ml will be the final volume. for 1% solution dont put 100ml then add 1g but instead weight 1 g then add the solvent up to 100ml
I'm quite confused. Is it 'dissolve 10g of NaOH in 100ml solution or 100ml of solvent?
Thanks for the video!
Dissolve 10g of NaOH in distilled water and make it upto 100 ml
@@mahanashchannel Okay. Thank you.
10% is 10g of NaOH in 100ml solvent total. meaning don't! put 100ml of solvent and add 10g of NAOH, because in this case the final volume will be slightly over 100ml which will decrease you NaOH concentration
Thanks alot for the lesson. However is it Solute to solution or solute to Liquid...
Can you start make videos about Atomic absorption spectrometer?
will make sure. thanks for suggestion.
I am start vedio on HPLC
GC ,automatic titrator, spectrometer, UV ,FTIR etc instrumental analysis
Great video, thank you. I want to prepare a 100 ml 25% v/v glutaraldehyde solution and the glutaraldehyde available is 50% wt% glutaraldehyde in water, MW= 100.12 g/mol, d= 1.106 g/ml. Would I be correct for using C1V1= C2V2. The answer I get is 50 ml of 50% glutaraldehyde in 100 ml to give 25% v/v glutaraldehyde. Thanks
yes c1v1 will work. in short you want to do from 50% to 25% meaning dilution of 2. so if you need 100ml total, just put 50ml of 50% +50 ml of water. the 50% will be diluted to 25%, done
Thank you so much, the best explanation & so easy to understand
What are the apparatuses that have been used?
You are speaking another and writing another mam in last similarly solution
Use full information thank you
Ma'am , class 10 ki lab me generally kitni normality ka dil NaOH solution use kiya jata hai please bataye
Very informative but what we will do if the disired volume of the solution rather than 💯.such as prepare 25%w/v NaoH solution in 500ml of water.
I think it is still in the same concept. 25=[(gram required)×100]/500
25%= 25g in 100ml total. if you want to prepare 500ml just multiply by 5= 125 g in 500ml total
Very good 💯
Perfectly video
Thanks for teaching in easy way
Thank you to help to clarifie it
Nice lge Rahiye
If you want to prepare a 20Wt% in 30mL? How is calculated?
you will add 6 g in 24 ml to make a final volume of 30 ml solution. You might adjust to volume to make the final volume 30mL.
ammonium hydroxide 1% (m/m) stock solution?
you will use 1g in 99 mL of water to make it a total volume of 100 mL, you will add water to make it 100 ml if it required. you will not dissolve 1 g in 100mL.
❤ thank To Easilly understod
Please solve this problem, and answer me please. If 30gm of 0.1% hydrocortisone is mixed with 2.5% of hydrocortisone what is the percentage of hydrocortisone in the final mixture?
you cant solve the problem. you need to know what is the final volume.
Hlw madam 12% ka dilution 0.05% kaise bnaye ge plzz help me
How is the NaCl molar mass from the human urine ? IT is bigger or smaller than 0,54M ? Thanks
MW of NACL is 58.443 g/mol no matter what (Periodic table). what you are asking is the concentration of NaCl in Urine. Hard to say since it will change according you water intake
Now i finally learned it. Thank you for explanation dear sir ;)
3:58 oral information was wrong please correction it.Thanks
I have to prepare 50ml of 1% of NaOH
So will I be putting the mass of solution value as 50ml or should I keep 100ml only and later should I add 1gram in 50ml or 2g in 50 ml... please help
1%= 1g in 100ml H2O total. so if you want 50ml it will be 0.5 g in 50ml total. Always weight the gram first then add the solvent up to the final volume desired. Not the other way around
Thanks man your way of teaching is very informative
عاشت ايدج دكتوره
Thank you So much maam..
Now I get a clear idea 💡 about it.
Thank you very much. Can we use the same method when dealing with copper11 sulphate
very clear idea
thanks a lot
Good teaching mam
Very helpful
Very nice
Ma'am how to make 6% of silver nitrate solution?
6% of silver nitrate solution is 6g silver nitrate solution in 100ml H2O total
special thank❤
Ma'am why we are used 100 ml to prepare 1% soln
you can use any volume to prepare... but its easy to understand according to 100 ml and u can use multiplication method from same calculation for any volume.
Superb....tq
Mam thank a lot for your video, can we do same method for H2O2 from 50% to 3%
no you want to do a dilution 50% to 3%, you need to do C1V1= C2V2 and you need to know what final volume you want (V2). C1=50%, v1=?, C2=3%
0.1% w/v sodium nitrate?
0.1%= 0.1g in 100ml total.
Remaining is all right
Hi 👋
I want to prepare 10% AgNO3 silver nitrate w/v
Can you help me please
calculations will be done in the same way as done for NaOH.
10%= 10g in 100ml total.
How to prepare 0.35% KOH in 50ml water
0.35%= 0.35g in 100ml total. which in 50ml will 0.35g/2= 0.175g in 50ml H2O TOTAL!
Can we apply this same for preparing 5% of znso4 solution ?
yes, 5g of znso4 in 100ml of H2O
How to make 5% (w/v) sodium nitrate solution
5%= 5g in 100ml total.
How to prepare 1 % solution of nacl in 100 ml
1%= 1g in 100ml total.
In last step u told 100gram at the place of 10gram naoh at both places
I have sodium hypochlorite 10%
How much of water i need to add in 1 ltr sodium hypochlorite
Mujhe bhi btana, agar pta lage
100ml sodium hypochloride and 900 ml water
10%= 10g in 100ml total =100g in 1000ml (1L) total. you weight 100g then add water up to 1L (which will be 900ml)
dissolved 100gm solution, what's meaning this solution?
DW
thank you
How can i make 2 % cellulose solution w/w
2 % cellulose solution w/w is 2g in 100g solvent total
Thank you so much for this video😍
Thankyou...thankyou.....thankyou ...soooo much
Thankyou mam
This was very helpful
Thx
More than thanku 😍
Super mam .please tamil teaching mam
thank you so much
Thank you so much mam 🙏
Plz try to make understand easily,this not Maths class,we r already into10 years service
Do 20%
Nkli
Went downhill starting at about 0:22
Angrej 😀😀😀
thank u so much