Àâòîð |
Òåìà: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 21:42 |
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ïîìîãèòå ñäåëàòü 2 çàäà÷è ïî õèìèè, î÷åíü íàäî, íà çàâòðà, à òî äî ñåññèè íå äîïóñòÿò, êòî ìîæåò, ïîæàëóéñòà!!! â ðàçóìíûõ ïðåäåëàõ ìàòåðèàëüíî îòáëàãîäàðþîòâåò:)îïðåäåëèòü ìàññó êàðáîíàòà êàëèÿ , âûïàâøåãî â îñàäîê èç 770ã. íàñûùåííîãî ïðè 100 ãðàäóñàõ öåëüñèÿ ðàñòâîðà, îõëàæäåííîãî äà 0 ãðàäóñîâ., åñëè â 100ã. ðàñòâîðèòåëÿ ïðè 100 ãðàäóñàõ öåëüñèÿ ñîäåðæèòñÿ 155ã ñîëè, à ïðè 0 ãðàäóñàõ-111ã, K2CO3 îòâåò:132,9 ã 4) ðàñ÷èòàéòå òåîðåòè÷åñêèé ïîòåíöèàë ðàçëîæåíèÿ âîäíîãî ðàñòâîðà NiSO4 ïðè ýëåêòðîëèçå íà ïëàòèíîâûõ ýëåêòðîäàõ îòâåò:1,479Â. |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 21:48 |
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íó õîòü êòîíèáóäü! | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 21:57 |
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Íó ðåøèòå åìó êòîíèòü....ÿ-æ íå òàêîé óìíûé... | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:08 |
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Âòîðàÿ çàäà÷à NISO4 êÀÒÎÄ NI2+ + 2 E = NI aNOD 2H20 = 4H+ +O2 + 4E rEACTION NI2+ + 2H2O = NI + 4H+ + O2 POTENZIAL1 NI2+/NI =-0,250v POTENZIAL2 O2/H20 = 1,229V iTOGO POT = POT2-POT1=1,229-(-0,250)=1,479 |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:20 |
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Anthony, ïàñèá òåáå áîëüøîå! òû òðóÚ | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:28 |
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ñàáæ óæå èñ÷åðïàí? | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:32 |
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íåò, åùå îäíà êîòîðàÿ ïåðâàÿ | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:37 |
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3)îïðåäåëèòü ìàññó êàðáîíàòà êàëèÿ , âûïàâøåãî â îñàäîê èç 770ã. íàñûùåííîãî ïðè 100 ãðàäóñàõ öåëüñèÿ ðàñòâîðà, îõëàæäåííîãî äà 0 ãðàäóñîâ., åñëè â 100ã. ðàñòâîðèòåëÿ ïðè 100 ãðàäóñàõ öåëüñèÿ ñîäåðæèòñÿ 155ã ñîëè, à ïðè 0 ãðàäóñàõ-111ã, K2CO3 îòâåò:132,9 ã âîò ýòà åùå, åñëè êòî ìîæåò |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:40 |
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Ïåðâàÿ çàäà÷à w - massovaya dola s- rastvorimost w=s/(s+100) Pri 100C w(k2co3)=155/255=0,607 m(k2co3) = 770*0,607 = 468 g x - kol-vo vipav osadka 770-x - massa kon rastvora Pri 20c w(k2co3) = (468-x)/(770-x)=111/211 x=132.9 |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:46 |
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Anthony,à âîò åñëè íå ñåêðåò à 20 ãðàäóñîâ öåëüñèÿ òàì ïðè÷åì, èëè ìîæ ÿ ÷î íå ïîíèìàþ... | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 22:59 |
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Anthony
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Ïðîñòî ÷àùå âñåãî ñïðàâî÷íûå äàííûå ïðèâîäÿòñÿ äëÿ 80 è äëÿ 20Ñ. Íî â òâîåì ñëó÷àå äàííûå äàíû â çàäà÷å äëÿ 0Ñ. ïîýòîìó ïèøè ïðè 0 ãðàäóñîâ | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 23:01 |
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ïàñèá òåáå îãðîìíîå! | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 27.12.2006 23:03 |
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Anthony
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Âñå ïó÷êîì | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 00:23 |
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Anthony êðóòü! Âîò òàê áû âñå ïîìîãàëè! | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 00:40 |
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ÄýòõÌîðîç™, òåïåðü òû ïðîñòî îáÿçàí ïîäàðèòü Ñýðó Ýíòîíè ïîäàðî÷åã, çà ïðèìåðíîå ïîâåäåíèå | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 00:40 |
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Ñëàâà Anthony | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 00:43 |
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è ïîäàðà÷åã | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 00:53 |
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Êóçüìà-ñòàâü | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 10:54 |
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...è ìíå | |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 28.12.2006 22:07 |
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Ëîóðåíç Íà ïîäàðî÷åê ïóñòü Êóçüìà ïðîñòàâëÿåòñÿ! |
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Àâòîð |
Òåìà: Re: ÏÎÌÎÃÈÒÅ ÑÄÅËÀÒÜ ÕÈÌÈÞ, ÏÎÆÀËÓÉÑÒÀ, Î× ÑÐÎ×ÍÎ
Âðåìÿ: 29.12.2006 01:33 |
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Antony |
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Çàêðûòàÿ òåìà