Question

22333 olom 6) When heated, Kolo, decomposes into Kol & 0₂. primaRO, A soolE mont 2KC10₃ - 2 KCl +302 a 8 as Som If it produced 74.4g of kol, how many grams of O2 were produced ? nous asalt & soupAS mass : _ 302 7.) 012 AJ + 3H,504 3H, + Alz (504) How many grams of sulfuric acid, H₂SO4 l are needed to react completely with 31.5 g of aluminum, Al? mass: 9 www.o to sloni un not com

Answer 1

7) Equation: 2 Alt + 3 H₂SO4 → 34 + m.wa 2x 26.98 Mow=3x98.079 m.cat 3X2 (53.96 ym) 3*98.079 mct=3 x 2. (294.24)9m (6 gm) Al2(504)3. M Mw=1x 342-15 342.15. 9m) 27 from equation ; H₂ 3 4 . 53.96 gm of Aluminium (Ap) React then, 31.5 gm of Aluminium (Al) React 294,24 gm ? i gm of Ho sol = 31.5 gm goh x 294.24 53.96. gon = 171.76 gm. of Haso4 React

W 2 Kelo 2x132.55 (245.1 9m). 2 kcl + 302 M. 2x74.55 M.W237 (149.1 9m) (36. 16 gm). > a composes 245.1 gm keloz gm ked and 96 gm 02. - In this decomposes 245.1 gm. produced 149.1 gm ked and 36 3 If it produced 74.4 gm of K How many grams of o₂ were ? For Reaction from equation, - ºf Ka .2 were produced ? / -> - 2 kalo 1 akcl + 32 . 149.1 gm 96 gm 74,4 9m s we known that ; go 2 (produced . 149. 1 gm kad 74.4.gm .Kcl gm of ? - 2 = gm of 96 goh x 74.4 gm - gm 149.1 gm . I= 47,90 gm o prochanied |