Question

Напишіть рівняння можливих реакцій відповідно до наведених схем: А) Сu + НСl = ; Б) 2Аl + 6НСl = ; В) МgО + 2НNО3 = ; Г) Ва(ОН)2 + MgO = У відповіді укажіть сумму всіх коефіцієнтів у реакціях, що відбуваються: а) 15 б) 16 в) 17 г) 18

Answer 1

Cu+HCl2≠
2Al+6HCl=2AlCl3+3H2
MgO+2HNO3=Mg(NO3)2+H2O
Ba(OH)2+2MgO=BaO2 + 2MgOH

Answer 2

Possible Reactions and Coefficients

а) The reaction between Cu and HCl can be represented by the equation: Cu + 2HCl → CuCl2 + H2. The sum of all coefficients in this reaction is 5.

б) The reaction between 2Al and 6HCl can be represented by the equation: 2Al + 6HCl → 2AlCl3 + 3H2. The sum of all coefficients in this reaction is 11.

в) The reaction between MgO and 2HNO3 can be represented by the equation: MgO + 2HNO3 → Mg(NO3)2 + H2O. The sum of all coefficients in this reaction is 7.

г) The reaction between Ba(OH)2 and MgO can be represented by the equation: Ba(OH)2 + MgO → BaO + Mg(OH)2. The sum of all coefficients in this reaction is 8.

Therefore, the sum of all coefficients in the given reactions is 5 + 11 + 7 + 8 = 31.

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