Ai(oh)3 --> ai203 + h20 mg + hbr --> mgbr2 + h2 mgo + hci --> mgci2 + h2o cao + h2o --> ca(oh)2 25 .
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Ответы на вопрос:
b20
1) mgo + 2hbr = mgbr2 + h2o
mgo + 2h⁺+2br⁻ = mg²⁺+2br⁻+h2o
2) mgo + 2hclo4 = mg(clo4)2 + h2o
mgo + 2h⁺+2clo4⁻ = mg²⁺+2clo4⁻+h2o
b21
1) fe(oh)₃ + 3hbr = febr3 + 3h2o
fe(oh)₃+3h⁺+3br⁻ = fe³⁺ + 3br⁻ + 3h2o
2) fe(oh)3 + 3hno3 = fe(no3)3 + 3h2o
fe(oh)3 + 3h⁺3no₃⁻ =fe³⁺3no₃⁻+3h2o
b22
1) h3po4 + 3koh = k3po4 + 3h2o
3h⁺+po₄³⁻+3k⁺+3oh⁻ = 3k⁺+po₄³⁻+3h2o
2) h3po4 + 3lioh = li3po4+3h2o
3h⁺+po₄³⁻+3li⁺+3oh⁻ = 3li⁺+po₄³⁻+3h2o
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