ca(oh)2 + 2 hcl = cacl2 + h2o
m(hcl) = 250 * 0.1 = 25 г
n(hcl) = 25/36.5 = 0.68 моль
m(ca(oh)2) = 180 * 0.2 =36 г
n(ca(oh)2) = 36/74 = 0.49 моль
считаем по hcl (так как его недостаток) 0.68/2 < 0.49
m (cacl2) = 111 * 0.34 = 37.74
n (ca(oh)2) ост = 0.49-0.34=0.15
m (cacl2) ост = 0.15 * 74 = 11.1 г
m (h2o) по реак = 0.34*18 = 6.12 г
m (h20) у hcl и ca(oh)2 = 250 * 0.9 + 180 * 0.8 = 369 г
m(h2o) общ = 375.12 г
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Answers & Comments
ca(oh)2 + 2 hcl = cacl2 + h2o
m(hcl) = 250 * 0.1 = 25 г
n(hcl) = 25/36.5 = 0.68 моль
m(ca(oh)2) = 180 * 0.2 =36 г
n(ca(oh)2) = 36/74 = 0.49 моль
считаем по hcl (так как его недостаток) 0.68/2 < 0.49
m (cacl2) = 111 * 0.34 = 37.74
n (ca(oh)2) ост = 0.49-0.34=0.15
m (cacl2) ост = 0.15 * 74 = 11.1 г
m (h2o) по реак = 0.34*18 = 6.12 г
m (h20) у hcl и ca(oh)2 = 250 * 0.9 + 180 * 0.8 = 369 г
m(h2o) общ = 375.12 г