Chemistry P1 and P2 today

[altox876]

Guys. What were the moles of CO2 produced in that tablet question? What was the energy released in the CO question? What was the answer to the equilibrium mcq which said, add more hcl, pressure etc. AND, X didn't have NO3-? How? NaOH was added and acidified. Ammonia was produced. That's the property of Nitrate too. H+ I wrote as well.

I remember my answer to the tablet question being something like 0.004.

 

[Haris Sal11]

You're the first person I've come across that has gotten it right. Congrats.

Why not NO3-?

 

[iamLbert]

X is H4NO3V, X + potassium iodide to produce iodine

What is the chemical nature of X?

 

[Shadow]

Are you crazy? It said NaOH was added and it was acidified. Ammonia was being produced. It had to be NO3-.

Ammonia was the gas produced, they asked about ions present ... If ammonia is produced, AMMONIUM must b present ... Check the test for AMMONIUM, u add NaOH n then warm it, it produces AMMONIA gas ... In ques, AMMONIA was produced so AMMONIUM (ammonia ions) was present (NH4+)

 

[danial 234]

Guys. What were the moles of CO2 produced in that tablet question? What was th e energy released in the CO question? What was the answer to the equilibrium mcq which said, add more hcl, pressure etc. AND, X didn't have NO3-? How? NaOH was added and acidified. Ammonia was produced. That's the property of Nitrate too. H+ I wrote as well.

haris ammonia is only liberated by nitrate in prescence of NaOH and aluminium

 

[danial 234]

X is H4NO3V, X + potassium iodide to produce iodine

What is the chemical nature of X?

oxidising agent

 

[ritx]

Guys. What were the moles of CO2 produced in that tablet question? What was the energy released in the CO question? What was the answer to the equilibrium mcq which said, add more hcl, pressure etc. AND, X didn't have NO3-? How? NaOH was added and acidified. Ammonia was produced. That's the property of Nitrate too. H+ I wrote as well.

and the mass of calcium carbonate was 0.4 g RIGHT?

I chose the option: decrease the pressure. what did u choose?

 

[danial 234]

and the mass of calcium carbonate was 0.4 g RIGHT?

and the mass of calcium carbonate was 0.4 g RIGHT?

ryt

 

[Haris Sal11]

and the mass of calcium carbonate was 0.4 g RIGHT?

0.31.

 

[Shadow]

X is H4NO3V, X + potassium iodide to produce iodine

What is the chemical nature of X?

X is an oxidising agent since it has oxidised iodide to iodine

 

[Kinza Zimri]

X is H4NO3V, X + potassium iodide to produce iodine

What is the chemical nature of X?

higher in reactivity so displaces X

 

[ritx]

higher in reactivity so displaces X

X was an oxidizing agent. that was it's chemical property.

 

[danial 234]

higher in reactivity so displaces X

kinza ur ans is wrong

 

[Shadow]

I just checked. It is ammonia

No, i want to know wat was decomposed to produce V2O5, water n gas Z?

 

[ritx]

I chose the option: decrease the pressure. what did u choose

0.31.

 

[danial 234]

i

and the mass of calcium carbonate was 0.4 g RIGHT?

I chose the option: decrease the pressure. what did u choose?

chose add more HCl

 

[Kinza Zimri]

Aaaa what the hell did i do in my paper :O May the examiner somehow becomes blind

 

[Kamihus]

Unfortunately i couldnt break the trend of doing MCQ #1 wrong, i wrote NaCl and sand would be separated by separating funnel
Also worked for almost 5 minutes on the moles question, but still chose C3H7COOH

 

[Haris Sal11]

I chose the option: decrease the pressure. what did u choose

Same.

 

[danial 234]

Unfortunately i couldnt break the trend of doing MCQ #1 wrong, i wrote NaCl and sand would be separated by separating funnel
Also worked for almost 5 minutes on the moles question, but still chose C3H7COOH

C3H7COOH is right ans