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question number 37 also can you please reply to me on the "preparing for ICT exams forum?which
which question?
Bro it is because during electrolysis of aq NaCl , H+ ions discharge at cathode , and Cl- ions discharge at anode , leaving behind Na+ at cathode and OH- at anode. Na is basic , alkaline metal , so gives UI purple color when reacts with OH- ions to form NaOH , while nothing is left an anode now , so no color change thereGuys could anyone explain why The answer is D?
View attachment 63335
By OH i mean Oxygen bcz some oxygen molecules also dischargeBro it is because during electrolysis of aq NaCl , H+ ions discharge at cathode , and Cl- ions discharge at anode , leaving behind Na+ at cathode and OH- at anode. Na is basic , alkaline metal , so gives UI purple color , wyl OH is colorless , so naturally would give colorless result .
Thanks!!dip a glass rod into the solution, if crystals form on the rod, then it has reached crystallisation point, else it still hasn't
cBy OH i mean Oxygen
In b the answer is a nor gate at c it changed back to an or gate which can be drawn like this without its symbolView attachment 63049
Can anyone please show me a sample circuit for ci) , I couldnt really understand the question.
How can it b indicated by two indicators ? If we drop some methyl orange for e.g , the color at cathode should change from orange to yellow right ? It would change cz Na++OH-:NaoH , it an alkali , so it would give a positive test for an alkaliU seem confused or is it I who is confused.I think that Na+ is in the solution so it is to be detected from both indicators help me
c
The colour at the anode should also change because NaOH is formed in both sides(its the solution) and they said in each electrode so I think they are talking about the gasesHow can it b indicated by two indicators ? If we drop some methyl orange for e.g , the color at cathode should change from orange to yellow right ? It would change cz Na++OH-:NaoH , it an alkali , so it would give a positive test for an alkali
It cant b , cz Cl2 gas is acidic , should have shown red color by UI then .The colour at the anode should also change because NaOH is formed in both sides(its the solution) and they said in each electrode so I think they are talking about the gases
They made a mistake I think its cIt cant b , cz Cl2 gas is acidic , should have shown red color by UI then .
Elements with metallic and non metallic propertieswhat are metalloids ??
Umm math English physics biology chemistry accounts(which I hate) ICT and arabicWat subs ru giving this year dtrickster ?
Im giving Biology , Chemistry , Physics , English , Math and Pakistan Studies . I have given Urdu n Islamic studies . Have u cleared any sub b4 ?Umm math English physics biology chemistry accounts(which I hate) ICT and arabic
Repeat wat ?Do u guys repeat or wat coz u look lyk uv been here 4 years and y r people desperate 4 trophies
Nope all sub's 1 shoti don't want to waste timeIm giving Biology , Chemistry , Physics , English , Math and Pakistan Studies . I have given Urdu n Islamic studies . Have u cleared any sub b4 ?
No wtf , v come here cz we have fun chatting wd each other .Like u flunk subjects n all
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