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Question Number 17328 by tawa tawa last updated on 04/Jul/17

Commented by tawa tawa last updated on 04/Jul/17

Please my main problem is the (c) with my understanding, i thought the (c) is the same thing as the volumetric analysis given. do i need to calculate anything or am not getting it because i thought the answer to (c) should be X_i = (n_i /n) for each individual X_(Co_2 ) = 8% X_(H_2 O ) = 11% X_(O_2 ) = 7% X_(N_2 ) = 74% Or it has how i will calculate for (c), the above is my own understanding please put me through.

$$\mathrm{Please}\:\mathrm{my}\:\mathrm{main}\:\mathrm{problem}\:\mathrm{is}\:\mathrm{the}\:\left(\mathrm{c}\right) \\ $$$$\mathrm{with}\:\mathrm{my}\:\mathrm{understanding},\:\mathrm{i}\:\mathrm{thought}\:\mathrm{the}\:\left(\mathrm{c}\right)\:\mathrm{is}\:\mathrm{the}\:\mathrm{same}\:\mathrm{thing}\:\mathrm{as}\:\mathrm{the}\:\mathrm{volumetric}\: \\ $$$$\mathrm{analysis}\:\mathrm{given}.\: \\ $$$$\mathrm{do}\:\mathrm{i}\:\mathrm{need}\:\mathrm{to}\:\mathrm{calculate}\:\mathrm{anything}\:\mathrm{or}\:\mathrm{am}\:\mathrm{not}\:\mathrm{getting}\:\mathrm{it} \\ $$$$\mathrm{because}\:\mathrm{i}\:\mathrm{thought}\:\mathrm{the}\:\mathrm{answer}\:\mathrm{to}\:\left(\mathrm{c}\right)\:\mathrm{should}\:\mathrm{be}\:\:\mathrm{X}_{\mathrm{i}} \:=\:\frac{\mathrm{n}_{\mathrm{i}} }{\mathrm{n}} \\ $$$$\mathrm{for}\:\mathrm{each}\:\mathrm{individual} \\ $$$$\mathrm{X}_{\mathrm{Co}_{\mathrm{2}} \:} \:=\:\:\mathrm{8\%} \\ $$$$\mathrm{X}_{\mathrm{H}_{\mathrm{2}} \mathrm{O}\:} \:=\:\:\mathrm{11\%} \\ $$$$\mathrm{X}_{\mathrm{O}_{\mathrm{2}} \:} \:=\:\:\mathrm{7\%} \\ $$$$\mathrm{X}_{\mathrm{N}_{\mathrm{2}} \:\:} =\:\:\mathrm{74\%} \\ $$$$\mathrm{Or}\:\mathrm{it}\:\mathrm{has}\:\mathrm{how}\:\mathrm{i}\:\mathrm{will}\:\mathrm{calculate}\:\mathrm{for}\:\left(\mathrm{c}\right),\:\mathrm{the}\:\mathrm{above}\:\mathrm{is}\:\mathrm{my}\:\mathrm{own}\:\mathrm{understanding} \\ $$$$\mathrm{please}\:\mathrm{put}\:\mathrm{me}\:\mathrm{through}.\: \\ $$

Commented by 1234Hello last updated on 04/Jul/17

The given information tells the volumetric analysis means in 100 L volume of CO_2 = 8 L (say at STP). These values will be the molar ratio. Multiply by molar mass to get the mass ratio.

$$\mathrm{The}\:\mathrm{given}\:\mathrm{information}\:\mathrm{tells}\:\mathrm{the} \\ $$$$\mathrm{volumetric}\:\mathrm{analysis}\:\mathrm{means}\:\mathrm{in}\:\mathrm{100}\:\mathrm{L} \\ $$$$\mathrm{volume}\:\mathrm{of}\:\mathrm{CO}_{\mathrm{2}} \:=\:\mathrm{8}\:\mathrm{L}\:\left(\mathrm{say}\:\mathrm{at}\:\mathrm{STP}\right). \\ $$$$\mathrm{These}\:\mathrm{values}\:\mathrm{will}\:\mathrm{be}\:\mathrm{the}\:\mathrm{molar}\:\mathrm{ratio}. \\ $$$$\mathrm{Multiply}\:\mathrm{by}\:\mathrm{molar}\:\mathrm{mass}\:\mathrm{to}\:\mathrm{get}\:\mathrm{the}\:\mathrm{mass} \\ $$$$\mathrm{ratio}. \\ $$

Commented by tawa tawa last updated on 04/Jul/17

What am asking is that what should be the answer for (c) ???

$$\mathrm{What}\:\mathrm{am}\:\mathrm{asking}\:\mathrm{is}\:\mathrm{that}\:\mathrm{what}\:\mathrm{should}\:\mathrm{be}\:\mathrm{the}\:\mathrm{answer}\:\mathrm{for}\:\left(\mathrm{c}\right)\:??? \\ $$

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