%3Cp%20style%3D%22margin-right%3A%26nbsp%3B0px%3B%26nbsp%3Bmargin-bottom%3A%26nb
ID: 821033 • Letter: #
Question
%3Cp%20style%3D%22margin-right%3A%26nbsp%3B0px%3B%26nbsp%3Bmargin-bottom%3A%26nbsp%3B0.5em%3B%26nbsp%3Bmargin-left%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3BHelvetica%2C%26nbsp%3BArial%2C%26nbsp%3Bsans-serif%3B%26nbsp%3Bfont-size%3A%26nbsp%3B13px%3B%26nbsp%3Bline-height%3A%26nbsp%3B16px%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%26nbsp%3Bmax-width%3A%26nbsp%3B665px%3B%26nbsp%3Bcolor%3A%26nbsp%3Brgb(51%2C%26nbsp%3B51%2C%26nbsp%3B51)%3B%22%3E%3Cspan%26nbsp%3Bclass%3D%22c1%22%26nbsp%3Bstyle%3D%22margin%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-size%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-style%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-variant%3A%26nbsp%3Binherit%3B%26nbsp%3Bline-height%3A%26nbsp%3Binherit%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%22%3EPhosphorus%26nbsp%3Bpentachloride%26nbsp%3Bdecomposes%26nbsp%3Baccording%26nbsp%3Bto%26nbsp%3Bthe%26nbsp%3Bchemical%26nbsp%3Bequation%3C%2Fspan%3E%3C%2Fp%3E%3Cp%26nbsp%3Bstyle%3D%22margin-right%3A%26nbsp%3B0px%3B%26nbsp%3Bmargin-bottom%3A%26nbsp%3B0.5em%3B%26nbsp%3Bmargin-left%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3BHelvetica%2C%26nbsp%3BArial%2C%26nbsp%3Bsans-serif%3B%26nbsp%3Bfont-size%3A%26nbsp%3B13px%3B%26nbsp%3Bline-height%3A%26nbsp%3B16px%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%26nbsp%3Bmax-width%3A%26nbsp%3B665px%3B%26nbsp%3Bcolor%3A%26nbsp%3Brgb(51%2C%26nbsp%3B51%2C%26nbsp%3B51)%3B%22%3E%3Cspan%26nbsp%3Bclass%3D%22c1%22%26nbsp%3Bstyle%3D%22margin%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-size%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-style%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-variant%3A%26nbsp%3Binherit%3B%26nbsp%3Bline-height%3A%26nbsp%3Binherit%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%22%3EPCl%26nbsp%3B(g)----%26gt%3BPCl3(g)%26nbsp%3B%2BCl2%26nbsp%3B(g)%26nbsp%3BKc%3D1.80%26nbsp%3Bat%26nbsp%3B250%26nbsp%3BCelcius%3C%2Fspan%3E%3C%2Fp%3E%3Cp%26nbsp%3Bstyle%3D%22margin-right%3A%26nbsp%3B0px%3B%26nbsp%3Bmargin-bottom%3A%26nbsp%3B0.5em%3B%26nbsp%3Bmargin-left%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3BHelvetica%2C%26nbsp%3BArial%2C%26nbsp%3Bsans-serif%3B%26nbsp%3Bfont-size%3A%26nbsp%3B13px%3B%26nbsp%3Bline-height%3A%26nbsp%3B16px%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%26nbsp%3Bmax-width%3A%26nbsp%3B665px%3B%26nbsp%3Bcolor%3A%26nbsp%3Brgb(51%2C%26nbsp%3B51%2C%26nbsp%3B51)%3B%22%3E%3Cspan%26nbsp%3Bclass%3D%22c1%22%26nbsp%3Bstyle%3D%22margin%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-size%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-style%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-variant%3A%26nbsp%3Binherit%3B%26nbsp%3Bline-height%3A%26nbsp%3Binherit%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%22%3E%3Cbr%3E%3C%2Fspan%3E%3C%2Fp%3E%3Cp%26nbsp%3Bstyle%3D%22margin-right%3A%26nbsp%3B0px%3B%26nbsp%3Bmargin-bottom%3A%26nbsp%3B0.5em%3B%26nbsp%3Bmargin-left%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3BHelvetica%2C%26nbsp%3BArial%2C%26nbsp%3Bsans-serif%3B%26nbsp%3Bfont-size%3A%26nbsp%3B13px%3B%26nbsp%3Bline-height%3A%26nbsp%3B16px%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%26nbsp%3Bmax-width%3A%26nbsp%3B665px%3B%26nbsp%3Bcolor%3A%26nbsp%3Brgb(51%2C%26nbsp%3B51%2C%26nbsp%3B51)%3B%22%3E%3Cspan%26nbsp%3Bclass%3D%22c1%22%26nbsp%3Bstyle%3D%22margin%3A%26nbsp%3B0px%3B%26nbsp%3Bpadding%3A%26nbsp%3B0px%3B%26nbsp%3Bborder%3A%26nbsp%3B0px%3B%26nbsp%3Bfont-family%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-size%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-style%3A%26nbsp%3Binherit%3B%26nbsp%3Bfont-variant%3A%26nbsp%3Binherit%3B%26nbsp%3Bline-height%3A%26nbsp%3Binherit%3B%26nbsp%3Bvertical-align%3A%26nbsp%3Bbaseline%3B%22%3EA%26nbsp%3B0.143%26nbsp%3Bmol%26nbsp%3Bsample%26nbsp%3Bof%26nbsp%3BPCl5(g)%26nbsp%3Bis%26nbsp%3Binjected%26nbsp%3Binto%26nbsp%3Ban%26nbsp%3Bempty%26nbsp%3B2.35%26nbsp%3BL%26nbsp%3Breaction%26nbsp%3Bvessel%26nbsp%3Bheld%26nbsp%3Bat%26nbsp%3B250%26nbsp%3B%C2%B0C.%26nbsp%3BCalculate%26nbsp%3Bthe%26nbsp%3Bconcentrations%26nbsp%3Bof%26nbsp%3BPCl5(g)%26nbsp%3Band%26nbsp%3BPCl3(g)%26nbsp%3Bat%26nbsp%3Bequilibrium.%3C%2Fspan%3E%3C%2Fp%3E%3Cdiv%3E%5BPlC3%5D%3D%3C%2Fdiv%3EExplanation / Answer
let x mols of PCl5 reacted
then final concentrations are
concentration of PCl5 initially = .143/2.35 = .0608
.0608 - x , x,x
Kc = x^2/.143 -x
solving we get x = .06
cocentration of PCL5 = .0008
PCl3 = .06
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