Question

6)Using the balanced equation: SiO2 + 6HF → H2SiF6 + 2H2O, if 40.0 g SiO2 and 40.0 g HF react, determine:

a) how many grams of H2SiF6 are produced,

b) the limiting reactant,

c) the excess reactant,

d) the left over mass of your excess reactant

e) the percent yield if 45.8 g H2SiF6 was produced in lab.

Answer 1

bieg + 6HF → H,Sift +2H50 of 400g siog and 90.0 HF reach Limiting agent de HF ito @ 120 9 HF reaction 144 g HiSi Fo producers. 40 . " (1498.40 )g 120 489 H, si to producess, So 48 g h si Fb producess, © The limiting Breactants HF 1 @ the excess reactant → 8:02 O excess mass creactanit is sille, 120 g HF reaction required 60 g svies . : 120 220 gsiog to deft mass (40-20) g = 20g Sioz deft, © % yield = 468-X100 -95.47. ceo Scangield is g5.4% CamScanner