Map A Sapling Learning The neutralization of H3PO4 with KOH is exothermic. HIPO,
ID: 508667 • Letter: M
Question
Map A Sapling Learning The neutralization of H3PO4 with KOH is exothermic. HIPO, (aq) 3KoHlaq) 3H,oli) KuPO (aq)+ 173.2 kJ 55.0 mL of 0.200 M H3PO4 is mixed with 55.0 mL of 0.600 M KOH initially at 21.29 °C. Predict the final temperature of the solution if its density is 1.13 g/mL and its specific heat is 3.78 Jl(g aC) Assume that the total volume is the sum of the individual volumes. Number final AO Previous Give Up & View Solution Check Answer Next Ex Late su Points Grade Descri Policie You ca You ca give u You ca until y You loo answe attem CD eTex o HelpExplanation / Answer
Total volume of solution = 55.0 + 55.0 = 110. mL
Mass of solution = 110.* 1.13 = 124. g.
Specific heat = 3.78 J/g.0C
Heat change, q = 173.2 kJ = 173.2 * 1000 J
Initial temperature, t1 = 21.29 0C
Final temperature, t2 = ?
we know that,
q = m * s * (t2 - t1)
173.2 * 1000 = 124. * 3.78 * ( t2 - 21.29)
t2 - 21.29 = 369.5
t2 = 390.79 0C