This helped me in answering my modules for the second time already😅😊 Thank you very much for creating this video!

@undream797

2 жыл бұрын

Advance Chemistry?

awesome video and very clear key pts of the chp :))

Thanks sir i think i understand the topic much better now

Hi brother, I get the entropy thing. But if you see the equation at 6:53, the entropy is positive. But what if you had to compare it to another reaction that was positive and had all gaseous products. How do you determine which has a higher entropy?

@MSJChem

4 жыл бұрын

In this case, you would have to calculate the actual entropy change for the reaction. That would tell you which reaction has the greatest entropy change.

Thank you for the video, but how do we know the surrounding(>>0) outweighs the system which is negative, leading to a positive total entropy for this equation Cao(s)+CO2 - CaCo3.

@MSJChem

11 ай бұрын

The reaction between CaO and CO2 is a decrease in entropy because we have one mole of solid and one mole of gas forming one mole of solid. The reverse equation would be a positive entropy change.

you are a god.

@MSJChem

4 жыл бұрын

Well I wouldn’t go that far but thanks anyway!

Do we need to memorise the formula at 2:16?

where does -6010 come from? isn't the value -6.01 kJ mol (-1)

@MSJChem

5 жыл бұрын

The value was converted to joules because entropy is given in J/K mol.

@eshitaalexander7632

5 жыл бұрын

ohhh ok thank you and btw love your videos! they are very helpful. @@MSJChem

lalalalala Ad. Chem.

@bogeyman9979

3 жыл бұрын

I feel you

@undream797

2 жыл бұрын

Same. Stem ka right?

@lilacaiu

2 жыл бұрын

ako na grade 10 palang.

@fallensaints9906

2 жыл бұрын

@@lilacaiu meron ba kayong reaction paper nito😅

@lilacaiu

2 жыл бұрын

@@fallensaints9906 meron sa adv chem

7:40 How do we know that the second reaction is exothermic?

@MSJChem

Жыл бұрын

It’s a decomposition reaction which are always endothermic.

wait...how do you know that Cao(s)+CO2 - CaCo3 is exothermic reaction?

@MSJChem

Жыл бұрын

Negative sign for enthalpy change means exothermic

tabang huhu

Where does the number of entropy of the system and enthalpy of the system?

@MSJChem

5 жыл бұрын

Do you mean where do the values come from?

@taiseisuzuki1770

5 жыл бұрын

@@MSJChem Yes, I'm so sorry about my English skill.

@MSJChem

5 жыл бұрын

Taisei. Entropy and enthalpy values can be found in the chemistry data booklet.

@taiseisuzuki1770

5 жыл бұрын

@@MSJChem In data booklet, entropy of water (liquid) is 70.0 JK mol. Also, enthalpy of formation is -285.8 kJ mol.

ayaw ko na mag module.

Adchem teacher brought me here

Permission to use this Video.

@MSJChem

2 ай бұрын

For what?