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1) 2NaOH+CuSO₄=Na₂SO₄+Cu(OH)₂

    2Na+2OH+Cu+SO₄=2Na+SO₄+Cu(OH)₂

    2OH+Cu=Cu(OH)₂

2) Mg(OH)₂+2HCl=MgCl₂+2H₂O

    Mg+2OH+2H+2Cl=Mg+2Cl+2H₂O

    2OH+2H=2H₂O

3) Ag₂S+2HNO₃=2AgNO₃+H₂S

    Ag₂S+2H+2NO₃=2Ag+2NO₃+2H+S

    Ag₂S=2Ag+S

4) 2AgNO₃+BaCl₂=2AgCl+Ba(NO₃)₂

    2Ag+2NO₃+Ba+2Cl=2AgCl+Ba+(NO₃)₂

    2Ag+2Cl=2AgCl

5) 6NaOH + Al₂(SO₄)₃ = 2Al(OH)₃ + 3Na₂SO₄

    6Na+6OH+2Al+3SO₄=2Al(OH)₃+6Na+3SO₄

    6OH+2Al=2Al(OH)₃

7)Ca+2H₂O=Ca(OH)₂+H₂

   Ca+2H₂O=Ca+2OH+H₂

    2H₂O=2OH+H₂

8)CuO+2HNO₃=Cu(NO₃)₂+H₂O

   CuO+2H+2NO₃=Cu+2NO₃+H₂O

   CuO+2H=Cu+H₂O

9) 2NaOH+CO₂=Na₂CO₃+H₂O

    2Na+2OH+CO₂=2Na+CO₃+H₂O

    2OH+CO₂=CO₃+H₂O

дано

m(ppaNaCL) = 292.5 g

W(NaCL) = 10%

m(ppa AgNO3) = 136 g

W(AgNO3) = 25%

m(AgCL) - ?

NaCL+AgNO3-->AgCL+NaNO3

m(NaCL) = m(ppa NaCL) * W(NaCL) / 100% = 292.5 *10 / 100  = 29.25 g

m(AgNO3) = m(ppa AgNO3) * W(AgNO3) / 100% = 136 * 25 / 100 = 34 g

M(NaCL) = 58.5 g/mol

n(NaCL) = m(NaCL) / M(NaCL) = 29.25 / 58.5 = 0.5 mol

M(AgNO3) = 170 g/mol

n(AgNO3) = m(AgNO3) / M(AgNO3) = 34 / 170 = 0.2 mol

n(NaCL) > n(AgNO3)

n(AgNO3) = n(AgCL) = 0.2 mol

M(AgCL) = 143,5 g/mol

m(AgCL) = n(AgCL) * M(AgCL) = 0.2*143.5  = 28.7 g

ответ 28.7 гр

Объяснение: