Ответы на вопрос:
H3po4(конц.)+3koh(конц.)=k3po4+3h2o< br /> 3h+ + po43− + 3k+ +3oh− = 3k+ + po43− +3h2o cuso4+2koh=k2so4+cu(oh)2 cu2+ + so42- + 2k+ + 2oh-= 2k+ + so42- + cu(oh)2
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