A/L Chemistry help.simple question.but...

[Slesh]

machan meka itha podi prashnayak.so don't laugh. but eka eka thanwala eka eka widiyata karala thiyenawa ekai hariyatama danganna ahuwe.man kotas example 2 kin ahannam.mata meka ona wenne wibhaga sangunakaya hadanna.plz help soon.

1.

machanla me equation eke NaOH mole gana dannawa nam Br(-) mole gana hoya ganna wadi karanna or bedanna one keeyenda?eka theeranaya karanne kohomada?

2.
I2 + 2S2O3(2-) -----> S4O8(2-) + 2I(-)

me equation eke S2O3(2-) mole gana dannawa nam I2 mole gana hoyanna keeyenda * karanne or / ne?meka 2006 a/l wala kotasak.eke thiyenne I2 mole gana = S2O3(2-) mole gana/2 kiyala.

habai man me wage stoikiyo mithiyak thiyena thawa ganan hadala thiyenawa 2n wadi karal.ethakota pothe thiyena answer eka awa

habai samhara ganan wala as example 2n wadi kalath 2n beduwath anthimata wibhaga sangunakayata ekama uththare awa please help me to solve this.

dan nathnam bump ekakwath dana.

 

[kUddA_roX]

podu stoichiometric scene 1
X + Y ----> A + B nam
1 : 1 1 : 1 r8?

a wagema; 2P + Q ----> 3S + T wage nam
2 : 1 3 : 1 r8?
a kyanne P 2 mol & Q 1 mol waya weddi S 3 mol & T 1 mol hadenawa
wena widiyakin qwoth;
P 2 mol waya weddi Q 1 mol waya wenna ona PLUS S 3 mol hadeddi T 1 mol hadenawa r8?

so your question 1;
equation 1a NaOH : HBr = 4 : 2
= 2 : 1
AND 1HBr ----> H+ + Br- a nisa NaOH : Br- = 2 : 1 harida?
ethakota NaOH 2 mol wayaweddi Br- 1 mol wayawenawa (or in this case hadennath puluwan)
a nisa Br- mol = NaOH mol/2

Q2; same theory
I2 mol = S2O32- mol/2 hari!!!
mokada I2 : S2O32- = 1 : 2
anisa thiosulfate mol 2k wayaweddi I2 mol 1k wayawenawa hari??
therunada danne na.mama nam A/L kale 2011

 

[Twinkle24]

ammo matanam dan Chem amathaka welama gihin

 

[harindugamlath]

podu stoichiometric scene 1
X + Y ----> A + B nam
1 : 1 1 : 1 r8?

a wagema; 2P + Q ----> 3S + T wage nam
2 : 1 3 : 1 r8?
a kyanne P 2 mol & Q 1 mol waya weddi S 3 mol & T 1 mol hadenawa
wena widiyakin qwoth;
P 2 mol waya weddi Q 1 mol waya wenna ona PLUS S 3 mol hadeddi T 1 mol hadenawa r8?

so your question 1;
equation 1a NaOH : HBr = 4 : 2
= 2 : 1
AND 1HBr ----> H+ + Br- a nisa NaOH : Br- = 2 : 1 harida?
ethakota NaOH 2 mol wayaweddi Br- 1 mol wayawenawa (or in this case hadennath puluwan)
a nisa Br- mol = NaOH mol/2

Q2; same theory
I2 mol = S2O32- mol/2 hari!!!
mokada I2 : S2O32- = 1 : 2
anisa thiosulfate mol 2k wayaweddi I2 mol 1k wayawenawa hari??
therunada danne na.mama nam A/L kale 2011

Me thiyenne macho elakiri wage pahadili karala

 

[kUddA_roX]

Me thiyenne macho elakiri wage pahadili karala

thankyou

 

[king_pandukabaya]

අනේ මචන්, මම නම් ඕවා ගැන දන්නේ නෑ. ඒ ලෙවල් ඇණ ගත්තා දරුණුවටම
උදව්වක් විදිහට බම්ප් එකක් දාලා යනවා. දන්න පුද්ගලයෙන් කියන්න

 

[Slesh]

podu stoichiometric scene 1
X + Y ----> A + B nam
1 : 1 1 : 1 r8?

a wagema; 2P + Q ----> 3S + T wage nam
2 : 1 3 : 1 r8?
a kyanne P 2 mol & Q 1 mol waya weddi S 3 mol & T 1 mol hadenawa
wena widiyakin qwoth;
P 2 mol waya weddi Q 1 mol waya wenna ona PLUS S 3 mol hadeddi T 1 mol hadenawa r8?

so your question 1;
equation 1a NaOH : HBr = 4 : 2
= 2 : 1
AND 1HBr ----> H+ + Br- a nisa NaOH : Br- = 2 : 1 harida?
ethakota NaOH 2 mol wayaweddi Br- 1 mol wayawenawa (or in this case hadennath puluwan)
a nisa Br- mol = NaOH mol/2

Q2; same theory
I2 mol = S2O32- mol/2 hari!!!
mokada I2 : S2O32- = 1 : 2
anisa thiosulfate mol 2k wayaweddi I2 mol 1k wayawenawa hari??
therunada danne na.mama nam A/L kale 2011

bump

machan thank you very much.but thama awla thiyenawa.
mata tharaha nathuwa menna me gaana hadala denawada lokuma loku udawwak. mata me thread eke prashne wisdaganna bari me gaana nisa thama

"" I2 1g k jalaya 50 cm^3 samaga hodin solavana ladi.jalastharaye 25cm^3 k samaga mulumaninma prathikriya weemata 0.01 mol dm^-3 Na2S2O3 4.5 cm^3 k waya wiya. I2 sadaha CCl4 saha H2O athara wiyapthi sangunakaya soyanna? ""

please machn

 

[Slesh]

bump

bump

bump

Thanks machanla

 

[harindugamlath]

thankyou

You are welcome! Math 2011 dannam amathaka wegena yanne

 

[Slesh]

Me thiyenne macho elakiri wage pahadili karala

අනේ මචන්, මම නම් ඕවා ගැන දන්නේ නෑ. ඒ ලෙවල් ඇණ ගත්තා දරුණුවටම
උදව්වක් විදිහට බම්ප් එකක් දාලා යනවා. දන්න පුද්ගලයෙන් කියන්න

 

[flag au:]

machan thank you very much.but thama awla thiyenawa.
mata tharaha nathuwa menna me gaana hadala denawada lokuma loku udawwak. mata me thread eke prashne wisdaganna bari me gaana nisa thama

"" I2 1g k jalaya 50 cm^3 samaga hodin solavana ladi.jalastharaye 25cm^3 k samaga mulumaninma prathikriya weemata 0.01 mol dm^-3 Na2S2O3 4.5 cm^3 k waya wiya. I2 sadaha CCl4 saha H2O athara wiyapthi sangunakaya soyanna? ""

please machn

DAN nam mathaka na lokka , habai pratikiyawa eka dunoth theory eka apply karala dan nam

 

[Slesh]

bump

Thanks machan.

 

[Slesh]

DAN nam mathaka na lokka , habai pratikiyawa eka dunoth theory eka apply karala dan nam

prathikriyawa nam meka I2 + 2Na2S2O3 -----> Na2S4O6 + 2NaI

mata me thread eke dala thiyena prashne me gane mole gana hoyanakota enawa

 

[mottaya]

machan thank you very much.but thama awla thiyenawa.
mata tharaha nathuwa menna me gaana hadala denawada lokuma loku udawwak. mata me thread eke prashne wisdaganna bari me gaana nisa thama

"" I2 1g k jalaya 50 cm^3 samaga hodin solavana ladi.jalastharaye 25cm^3 k samaga mulumaninma prathikriya weemata 0.01 mol dm^-3 Na2S2O3 4.5 cm^3 k waya wiya. I2 sadaha CCl4 saha H2O athara wiyapthi sangunakaya soyanna? ""

please machn

meke CCl4 parimaawa naane..

 

[mottaya]

malaya ikmanata reply korahan mata wadak ty..

 

[Slesh]

gane ohoma thama thiyenne.CCl4 parimawa hoyanna nathuwa hadanna puluwan neh arambaka I2 mole ganai dann nisa jaalye mole ganen adu kalam CCl4 wala mole gaana enawa neda?

 

[Slesh]

malaya ikmanata reply korahan mata wadak ty..

 

[mottaya]

gane ohoma thama thiyenne.CCl4 parimawa hoyanna nathuwa hadanna puluwan neh arambaka I2 mole ganai dann nisa jaalye mole ganen adu kalam CCl4 wala mole gaana enawa neda?

mol gana awata saandaranayan athara anupaathaya ganne..
mol athara anupaathaya ganna puluwan parima samaanai kiyala ty nam witarai..
mama ehenam sama parimaa kiyala hithala hadala dennam..

 

[Good Heart]

gane ohoma thama thiyenne.CCl4 parimawa hoyanna nathuwa hadanna puluwan neh arambaka I2 mole ganai dann nisa jaalye mole ganen adu kalam CCl4 wala mole gaana enawa neda?

arambaka mole gana dannawa
H2O 25cm3 samaga CCl4 th 25cm3 kda bajanaye thiyenne

 

[mottaya]

meke e nathath podi awlak ty ne..
අයඩීන් ජලය 50ක ඩියකරලා CCl4 එක්ක කලවම් කරලා එකෙන් 25ක් ගන්නවද? නැත්නම් ජලය 50ක දිය කරලා එකෙන් 25ක් අරන් CCl4 එක්ක මිශ්‍ර කරලා ඒ 25ම අනුමාපනය කරනවද කියලා නෑනේ...
ප්‍රශ්නෙ හරියට දාපන් මම බලල රෑ වෙලා කියන්නම්...