Question

Item 3 < 3 of 6 > Review Constants Periodic Table Elemental phosphorus reacts with chlorine gas according to the equation You may want to reference (Pages 299 - 306) Section 7.5 while completing this problem. P4()+6C1, (E)--4PC13 (1) A reaction mixture initially contains 45.81 g P4 and 131.3 g Cl2. Part A Once the reaction has reached completion, what mass (in g) of the excess reactant is lef Express the mass in grams to three significant figures. 10 ALQ * 0 0 ? Submit Request Answer

Answer 1

P416) + G G/2(90 4 Poloch) molao mass of P4 = 123.89 g/mol G12 = 70.906 g/mol 0.369 mol PH 45.81 g PH | I molPH - | 123.89 g 131.3 9 612 7 Imol 612 - 70.906 g 1.8514 mol 612 AS por balance eg', 'mol PH reacts with 6 mol of C12 :. 0.369 Mol PH wowd geact with 16x0.369)- 2.214 moi cla But beoe 1.8517 mol Clz is used. It means Gig is limiting deaclar & Pi is excess :Too 1-8517 rol Gly, we required (-1* 1.8517) mol PH = 0.308 Mol PA Excess P4 = 0.369 -0.308 = 0.061 MOT PA 0.061 Tool P4 = 0.061 X 123.89 g = 7.56 g P4