Question

Which Alkali Metal Carbonate? Report Sheet Simple Weight Loss Collected Data: Trial 1 Trial 2 Mass of flask (m,) 91 249 9 18-447 s Mass of flask + unknown (m2) 100 4850 93.293 9 Mass of graduated cylinder + HCI (ms) lo mL CMass of graduated cylinder (ma) 35. 6373 35.622 24 7899 24.755 9 Mass of flask after reaction (ms) 103.562 110.6943 Calculated Data: Trial 2 Trial 1 2.044 9 Mass of Unknown (mg m2-mi) 2.038 9 Mass of HCI (m7 = m3- ma) 10.8679 68ヤ3.01 12. 892 9 12.9059 Mass of reactants (mg= m6 + m7) 12.313 9 12. 2479 Mass of products (mg ms- mi) : 579 9 .658 9 Mass of CO2 lost (m10= mg- mg) Moles of CO2 lost (MM 44.01 g/mol) Moles of X2CO3 (same as previous value) Molar Mass of X2CO3 (mg/ Moles of X2CO3) Molar Mass of X Identity of X

please find the values for the empty boxes abd show your work.

Answer 1

Reac hon bet ween metal canhorate and Hcl is as follows MCO 2Hcl Mcl + Je I mol Co Imol Nco psodu ce Trial Trial 2 O.579 9 O6583 Mass of C Moles of co O-6589 O01495 44 01 9/mol O.579-0.013156 md 44.01 mol moles of O013156mol O.01495 mol 2.044 9 =155.379/mo Molay mass ot 20389 136.329o 013156 M Coase/wales) O.01495mo ot x. Then + (20) +x15.440) =Molay mass of Xcq Let x be Ite Molar mass 2x+ 60= 136.32 22x60 =155-37 =G6 32-60) (63-t5-550 38-16 9/mol = 47-68 9mo - - Carbonates are Alkali metal Among thi se metals, Potassi um mola y mas Meabal voitd and matching to your Are MM 39 098 experimental Value X will be k is the nnkno wn and