kiya wohi? .-.wohee na
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kiya wohi? .-.wohee na
answer this plz .-.taamba (copper) reacts with air? :O
Yes it doesanswer this plz .-.
not until heatedanswer this plz .-.
on heating externally, yes otherwise not ... on heating it becomes CuO (black)answer this plz .-.
H+ ions move towards cathode (H2)This is a very important question of Chemistry 5070_w13qp_11 question 14.
Why does the acid become more concentrated as dilute H2SO4 is being electrolysed?
The answer is A
View attachment 43240
yep.. agr summary mei word limit exceed hjai tu kia hta man i exceeded itttttttttttttttttEnglish tomorrow??
they'll cut off the extra words and then read it.yep.. agr summary mei word limit exceed hjai tu kia hta man i exceeded ittttttttttttttttt
If u see the ms it says marks are given for OWN WORDS and USE OF LANGUAGE. I dont think marks would be deducted.yep.. agr summary mei word limit exceed hjai tu kia hta man i exceeded ittttttttttttttttt
Ok just calm down. Both the excess and concentrated are written in brackets. So it is not compuslory to include them. You can however include them, and they will get accepted. So as you can see CIE is actually accepting more responsesHey guys, so I found this weird thing today that kinda contradicts what we've studied .. or atleast what Iv'e studied ..
We all know the test of No3- ions .. actually it's quite simple ...dil NaOH , Al powder +heat = NH3 .. that's fine but I've compiled this contradiction of CIE.
check this : B8 Q ci)
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s06_qp_2.pdf
MS : http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s06_ms_2.pdf
it says NaOH in either part ok ?
now check this one : A6 e)
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s09_qp_2.pdf
MS : http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s09_ms_2.pdf
It emphasized for the first time (Excess).... okay no prob .. we've been doing this in p4 for a long time...
^those above were just to confirm it ..
now look at this: B7 d ii)
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_w12_qp_21.pdf
MS http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_w12_ms_21.pdf
for the first time now it says (CONCENTRATED) whaaaaaaat ?
Is it just me or are the situations changing on every question ?
can someone please clear up what kind of NaOH to use -_-
#GettingRealTiredOfYourShitChemistry
wasn't accepting more responses used to be in ALLOW: .... or IGNORE: .... ?Ok just calm down. Both the excess and concentrated are written in brackets. So it is not compuslory to include them. You can however include them, and they will get accepted. So as you can see CIE is actually accepting more responses
Your answer is absolutely correct. Just include that the gas produced turn litmus blue, and that it is ammonia
Yes it is. I just couldn't find any other way to put thiswasn't accepting more responses used to be in ALLOW: .... or IGNORE: .... ?
smooth move sherlock... >>Yes it is. I just couldn't find any other way to put this
Nitrogen comprises 79% of air present,so naturally some would be present in the tubes before the experiment,
both cases consider more pts..It,s just tht ALLOW box includes some unusual but correct answers or slightly vague but it still understandably correct..wasn't accepting more responses used to be in ALLOW: .... or IGNORE: .... ?
This is olevel thread not IGCSE .-.
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