Trick to Calculate Molarity | Molarity practice problems

This lecture is about trick to calculate molarity in chemistry. I will teach you many numerical problems of molarity. After watching this lecture, you will be able to easily calculate molarity of any solution.
To learn more, watch this lecture till the end.
#molarity
#chemistry
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[@pinkbts6762]

5:38 0.2 ÷40 = 0.005

[@leafleteducation]

Yes. Its mistaken i think.

[@everysecond3652]

Yeah...... So the answer is 0.0083

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0.2 g of NaoH in 600cm^3 in this question the correct answer is 0.0083M

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[@harisrinath]

Sir pls clarify if we dissolve 4 g NaOH in 250 ml water . then number of moles is 0.4 M . this is 4 g in 1000 ml according to the definition of molarity . but for 250 ml we need to calculate ?/

[@sravanthi344]

0.25L

[@AlRazifounder]

No.of moles of NaOH=4÷31=0.13
So molarity =0.13mol÷.25L=.52M

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sir I think there is a mistake in decimal for q 1 that NaoH q I think the answer is 0.005 decimal point is wrong

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[@sriramsundar7951]

n=0.005 mol , molarity : 0.0083 mol/lit

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Your solution will explode. Because if we add water directly into conc acid it will explode

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Hey dude w he said he will add water until it reaches 1 l mark which means that the HCL already has water and it is dilute

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6:49 has calculation mistake sir.. Its making confused..

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6:08 :- 0.2/40 = 0.005 🙃

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6:29 0.2/40=0.005

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sir how e could add water in hcl on
ly hcl should be added in water

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if u mix 20 ml of 50mM sodium acetate with 30 ml of 25 mM glucose, what is the concentration of each in final solution???

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Mmol =mole.1000

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Sir at 5:37 2/40 is 0.005 , so the molarity is 0.0083bar

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8:53 20 divided by 36.5 is 0.54

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[@user-jq4pc5xc4h]

sir... in the first hard level question...no. of moles calculation ...0.2/40 results in 0.005 moles sir ....please help me out if i am wrong .....coz i am a pure science student sir.

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May be it is our editing mistake...
🤔

[@madhavivajrala4235]

At 5:38 0.2÷40=0.005😅

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Ah I too hav tis same confusion...😶

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[@akshittheexplorer]

Good evening sir, I have a question in the 2nd numerical of hard level , when we divide given mass by molar mass , I calculated, it came around 0.063g and the final answer came 0.11M .. so if we take the n=0.063g then it would be okay I mean can this method also be used to calculate that numerical... I will wait for your reply.. Thanks in advance..

[@aesthetic_memer_99]

yes this method can also be but it will become more accurate if you round off the value.

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0.2÷40 is 0.005

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Shorts

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1080mol/L

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1st comment

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5:36 wrong calculation. you should have corrected.

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Which wrong calculation

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