Question

Электронный баланс! Химия! Срочно;) Составьте схемы электронного баланса, расставьте коэффициенты в уравнениях: KI+H2SO4 = I2 + K2SO4+H2O+SO2

Answer 1

Электронный баланс - это просто.В реакции расставляем заряд(степень окисления каждого элемента и смотрим, с каких изменения во время реакции.
K(+1)J(-1)+H(+1)2S(+6)O(-2)4 = J(0)2+K(+1)2S(+6)O(-2)4+H(+1)2O(-2)+S(+4)O(-2)2
Обязательно в окислительно-восстановительных реакциях должна быть такая парочка. У нас это  йод и сера. 
2J(-1)   -  2e --> J(0) 2  I   1
S (+6)  + 2e -->  S(+4)  I   1    2 иона йода (восстановитель)отдают два электрона до свободного йода, окислитель сера (+6) принимает два электрона и восстанавливается до S(+4). Поэтому ставится в электронном балансе по 1. 2KJ +2H2SO4 =J2+K2SO4+2H2O+SO2

Answer 2

Electronic Balance in Chemistry

An electronic balance is a device used in chemistry to measure the mass of substances with high precision. It operates based on the principle of electromagnetic force compensation. Here is a schematic representation of the electronic balance:

1. Weighing Pan: This is where the substance to be weighed is placed. 2. Electromagnetic Force Sensor: It detects the force exerted by the substance on the weighing pan. 3. Electromagnetic Coil: It generates a magnetic field. 4. Permanent Magnet: It provides a counteracting force to balance the substance's weight. 5. Control Unit: It processes the signals from the force sensor and adjusts the current in the electromagnetic coil to maintain balance. 6. Digital Display: It shows the mass of the substance based on the current in the electromagnetic coil.

Balancing the Chemical Equation: KI + H2SO4 = I2 + K2SO4 + H2O + SO2

To balance the given chemical equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Here is the balanced equation:

2KI + H2SO4 = I2 + K2SO4 + 2H2O + SO2

Explanation: - The unbalanced equation has 2 potassium (K) atoms on the left side and only 1 on the right side. To balance this, we multiply K2SO4 by 2, resulting in 2 potassium atoms on both sides. - The unbalanced equation has 4 hydrogen (H) atoms on the left side and only 2 on the right side. To balance this, we multiply H2O by 2, resulting in 4 hydrogen atoms on both sides. - The unbalanced equation has 1 sulfur (S) atom on the left side and only 1 on the right side, which is already balanced. - The unbalanced equation has 4 oxygen (O) atoms on the left side and only 3 on the right side. To balance this, we multiply SO2 by 2, resulting in 4 oxygen atoms on both sides. - The unbalanced equation has 2 iodine (I) atoms on the left side and only 1 on the right side. To balance this, we multiply I2 by 2, resulting in 2 iodine atoms on both sides.

Balanced Chemical Equation: 2KI + H2SO4 = I2 + K2SO4 + 2H2O + 2SO2

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