Question

Допишите уравнение реакции. Расставьте Коэффициенты. Определите тип химичиской реакции. P2O5+KOH=..... Zn(NO3)2+NaOH= .... K2CO3+HNO3=.... Пожалуйста, помогите.

Answer 1

Ответ:

Объяснение:

P2O5 +6 KOH =2 K3PO4 + 3H2O  (обмен)

Zn(NO3)2 + 2NaOH = Zn(OH)2↓ + 2NaNO3   (обмен)

K2CO3 + 2HNO3 = 2KNO3 + CO2↑ + H2O  (обмен)

Answer 2

Equation 1: P2O5 + KOH = ?

To balance the equation P2O5 + KOH = ?, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's balance the equation step by step:

1. Start with the phosphorus (P) atoms: - There are 2 phosphorus atoms on the left side (P2O5). - To balance this, we need to put a coefficient of 2 in front of KOH: P2O5 + 2KOH = ?

2. Next, balance the oxygen (O) atoms: - There are 5 oxygen atoms in P2O5 and 1 oxygen atom in KOH. - To balance this, we need to put a coefficient of 5 in front of KOH: P2O5 + 2KOH = K2O5P + H2O

3. Finally, balance the potassium (K) and hydrogen (H) atoms: - There are 2 potassium atoms and 2 hydrogen atoms on the right side. - To balance this, we need to put a coefficient of 2 in front of K2O5P and 4 in front of H2O: P2O5 + 2KOH = 2K2O5P + 4H2O

The balanced equation is: P2O5 + 2KOH = 2K2O5P + 4H2O

This is a double displacement reaction because the cations (K+ and H+) and anions (PO5- and OH-) exchange partners to form new compounds.

Equation 2: Zn(NO3)2 + NaOH = ?

To balance the equation Zn(NO3)2 + NaOH = ?, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's balance the equation step by step:

1. Start with the zinc (Zn) atoms: - There is 1 zinc atom on the left side (Zn(NO3)2). - To balance this