Question

Расставьте коэффициенты в схемах химических реакций, определите тип химической реакции H3PO4+K->H2+K3PO4

Answer 1

2H₃PO₄ + 6K → 2K₃PO₄ + 3H₂↑
Реакция замещения

Answer 2

Coefficients and Type of Chemical Reaction

The balanced chemical equation you provided is: H3PO4 + K -> H2 + K3PO4.

To balance this equation, we need to determine the coefficients for each compound in the reaction. The coefficients represent the number of molecules or moles of each substance involved in the reaction.

Let's balance the equation step by step:

1. Start by balancing the atoms that appear in only one compound on each side of the equation. In this case, we have phosphorus (P) and potassium (K).

The phosphorus atom is already balanced, as there is one P atom on each side of the equation.

However, the potassium atom is not balanced. There is one K atom on the left side and three K atoms on the right side. To balance it, we need to put a coefficient of 3 in front of K on the left side:

H3PO4 + 3K -> H2 + K3PO4

2. Next, balance the hydrogen (H) atoms. There are three H atoms on the left side and two H atoms on the right side. To balance it, we need to put a coefficient of 2 in front of H2 on the right side:

H3PO4 + 3K -> 2H2 + K3PO4

Now the hydrogen atoms are balanced.

3. Finally, balance the oxygen (O) atoms. There are four O atoms on the left side and four O atoms on the right side. The oxygen atoms are already balanced.

The balanced equation is:

H3PO4 + 3K -> 2H2 + K3PO4

Now let's determine the type of chemical reaction. Based on the reactants and products involved, this is a single replacement reaction. In this type of reaction, one element replaces another element in a compound.

In the given reaction, potassium (K) replaces hydrogen (H) in phosphoric acid (H3PO4) to form potassium phosphate (K3PO4) and hydrogen gas (H2).

I hope this helps! Let me know if you have any further questions.