GuppyR Posted July 2, 2022 Share Posted July 2, 2022 Could anyone please help me with the reaction between BaO Link to comment Share on other sites More sharing options...
exchemist Posted July 3, 2022 Share Posted July 3, 2022 14 hours ago, GuppyR said: Could anyone please help me with the reaction between BaO How many moles of CO2 are driven off? Link to comment Share on other sites More sharing options...
GuppyR Posted July 3, 2022 Author Share Posted July 3, 2022 5 hours ago, exchemist said: How many moles of CO2 are driven off? Oh so I can find the number of moles of CO2 by calculating the mass difference and apply that to the stoichiometry of the XO formed right. Afterwards so could I find the molar mass of the whole compound XO formed by {mass of residue (XO)} X {no. Of moles} of it? Link to comment Share on other sites More sharing options...
exchemist Posted July 3, 2022 Share Posted July 3, 2022 Just now, GuppyR said: Oh so I can find the number of moles of CO2 by calculating the mass difference and apply that to the stoichiometry of the XO formed right. Afterwards so could I find the molar mass of the whole compound XO formed by {mass of residue (XO)} X {no. Of moles} of it? You will find the number of moles is a suspiciously convenient number....... But your residue is a mixture of oxides: BaO and XO. (You are told it involves XCO3, not X2CO3 or X2(CO3)3 or something, so X has to be divalent and presumably produces an oxide with formula XO.) You now know how many moles of X you have but not how many of Ba, yet. That's where the acid reaction comes in, I think. I have not worked it through myself but, looking at the problem, I think that's what you are supposed to use to find the answer. Good luck. Link to comment Share on other sites More sharing options...
John Ryan Posted July 6, 2022 Share Posted July 6, 2022 On 7/3/2022 at 4:48 PM, exchemist said: You will find the number of moles is a suspiciously convenient number....... But your residue is a mixture of oxides: BaO and XO. (You are told it involves XCO3, not X2CO3 or X2(CO3)3 or something, so X has to be divalent and presumably produces an oxide with formula XO.) You now know how many moles of X you have but not how many of Ba, yet. That's where the acid reaction comes in, I think. I have not worked it through myself but, looking at the problem, I think that's what you are supposed to use to find the answer. Good luck. Thanks for the advice. I had a similar chemistry homework, it helped me figure it out. Link to comment Share on other sites More sharing options...
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