Sodium + Sulfuric Acid
and
Phosphoric Acid + Magnesium Hydroxide
a.write the formula
b. supply the product
c.type of reaction
d. balancing
2Na + H2SO4 ==> Na2SO4 + H2
single displacement
I'll leave the other one for you. products are Mg3(PO4)2 + H2O
It is a double displacement reaction.
a. To write the formula for the given reactions, we need to know the chemical symbols and valences of the elements involved.
1. Sodium (symbol: Na) has a valence of +1.
Sulfuric Acid (formula: H2SO4) consists of hydrogen (H) with a valence of +1, sulfur (S) with a valence of +6, and oxygen (O) with a valence of -2.
So, the formula for the first reaction is:
Na + H2SO4
2. Phosphoric Acid (formula: H3PO4) consists of hydrogen (H) with a valence of +1, phosphorus (P) with a valence of +5, and oxygen (O) with a valence of -2.
Magnesium Hydroxide (formula: Mg(OH)2) consists of magnesium (Mg) with a valence of +2, oxygen (O) with a valence of -2, and hydroxide (OH) with a valence of -1.
So, the formula for the second reaction is:
H3PO4 + Mg(OH)2
b. To determine the products of the reactions, we need to understand the general reaction types and the combining capabilities of the elements.
1. Sodium reacts with sulfuric acid to form sodium sulfate and hydrogen gas. The products are:
Na + H2SO4 -> Na2SO4 + H2
2. Phosphoric acid reacts with magnesium hydroxide to form magnesium phosphate and water. The products are:
H3PO4 + Mg(OH)2 -> Mg3(PO4)2 + H2O
c. The type of reaction can be identified based on the combination of elements and the products formed. Let's analyze each reaction:
1. Sodium + Sulfuric Acid:
This is a single replacement reaction, also known as a displacement reaction. Sodium replaces hydrogen in the sulfuric acid, resulting in sodium sulfate and the release of hydrogen gas.
2. Phosphoric Acid + Magnesium Hydroxide:
This is a double replacement reaction, also known as a precipitation reaction. The positively charged magnesium ions combine with the negatively charged phosphate ions from the phosphoric acid to form magnesium phosphate, while the hydroxide ions combine with the hydrogen ions from the phosphoric acid to form water.
d. Balancing the equations:
Let's balance the equations to ensure that the number of atoms on both sides is the same.
1. Na + H2SO4 -> Na2SO4 + H2
The equation is already balanced since there is only one atom of each element on both sides.
2. H3PO4 + Mg(OH)2 -> Mg3(PO4)2 + H2O
The balanced equation is:
2H3PO4 + 3Mg(OH)2 -> Mg3(PO4)2 + 6H2O