(2)(3)設(shè)固體混合物中氯化鈉的質(zhì)量為x,反應(yīng)后生成硝酸鈉的質(zhì)量為y.
NaCl+AgNO3=AgCl↓+NaNO3
58.5 143.5 85
x 14.35g y
(2)
58.5 |
143.5 |
x |
14.35g |
(3)
143.5 |
85 |
14.35g |
y |
反應(yīng)后濾液中溶質(zhì)的質(zhì)量分數(shù)為:
12.35g?5.85g+8.5g |
100g |
(4)10℃時硝酸鈉的溶解度是z
則有
40g×15% |
40g?26.5g?40g×15% |
z |
100 |
z=80g
答:(2)混合物中,氯化鈉的質(zhì)量是5.85g.(3)反應(yīng)后濾液中溶質(zhì)的質(zhì)量分數(shù)是15%.(4)10℃時硝酸鈉的溶解度是80g.