向100gBaCl2溶液中滴加Na2SO4溶液至完全反應(yīng)。反應(yīng)過程中生成沉淀的質(zhì)量與滴加Na2SO4溶液的質(zhì)量關(guān)系如表所示:
滴加Na2SO4溶液的質(zhì)量/g |
10 |
20 |
30 |
40 |
生成沉淀的質(zhì)量/g |
2.33 |
4.66 |
6.99 |
6.99 |
請(qǐng)計(jì)算:
(1)恰好完全反應(yīng)時(shí)生成BaSO
4的質(zhì)量為
6.99
6.99
g;
(2)BaCl
2溶液中溶質(zhì)的質(zhì)量分?jǐn)?shù)(寫出計(jì)算過程)。