Ag2C2O4是什么。1LAg2C2O4饱和溶液中质量为0.06257g，若不考虑离子强度，水解等因素，Ag2C2O4的Ksp是？

Ag2C2O4 草酸银

0.06257g，换算为物质的量是n = 0.06257 / 304 = 2.058 × 10^(-4) mol
即溶解的Ag2C2O4 物质的量是n = 2.058 × 10^(-4) mol
则[Ag+] = 2n， [C2O42-] =n
Ag2C2O4 = 2 Ag+ + C2O42-
Ksp = [C2O42-][Ag+]^2 = (2n)^2 * n = 4n^3 = 3.5 × 10^(-11)