19.哥哥姐姐帮个忙呗.
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19.哥哥姐姐帮个忙呗.
19.哥哥姐姐帮个忙呗.
19.哥哥姐姐帮个忙呗.
(1) NaOH+ H2SO4→ Na2SO4+ H2O (2) C CaCO3 Ca(OH)2
2NaOH+H2So4===Na2So4+2H2O
19.哥哥姐姐帮个忙呗.
19.哥哥姐姐帮个忙呗.
19.哥哥姐姐帮个忙呗.
(1) NaOH+ H2SO4→ Na2SO4+ H2O (2) C CaCO3 Ca(OH)2
2NaOH+H2So4===Na2So4+2H2O