Answer:
53.18 grams of H₂SO₄ are needed to react with 78.86 grams of Al(NO₃)₃.
Explanation:
The balanced reaction between Al(NO₃)₃ and H₂SO₄ is:
2 Al(NO₃)₃ + 3 H₂SO₄ → Al₂(SO₄)₃ + 6 HNO₃
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reagents are required:
- Al(NO₃)₃: 2 moles
- H₂SO₄: 3 moles
Being the molar mass of the elements:
- Al: 27 g/mole
- N: 14 g/mole
- O: 16 g/mole
- H: 1 g/mole
- S: 32 g/mole
then the molar mass of the reactants are:
- Al(NO₃)₃: 27 g/mole + 3*(14 g/mole + 3*16 g/mole)= 213 g/mole
- H₂SO₄: 2*1 g/mole + 32 g/mole +4*16 g/mole= 98 g/mole
Then, by reaction stoichiometry, the following reagent mass amounts are required:
- Al(NO₃)₃: 2 moles* 213 g/mole= 436 g
- H₂SO₄: 3 moles*98 g/mole= 294 g
Then you can apply the following rule of three: If by stoichiometry 436 g of Al(NO₃)₃ react with 294 g of H₂SO₄, 78.86 g of Al(NO₃)₃ with how much mass of H₂SO₄ will it react?
mass of H₂SO₄=53.18 g
<u><em>53.18 grams of H₂SO₄ are needed to react with 78.86 grams of Al(NO₃)₃.</em></u>
<u>Answer:</u> The balanced molecular equation is written below.
<u>Explanation:</u>
A molecular equation is defined as the chemical equation in which the ionic compounds are written as molecules rather than component ions.
When zinc (II) nitrate reacts with sodium hydroxide, it leads to the formation of white precipitate of zinc (II) hydroxide and an aqueous solution of sodium nitrate.
The balanced chemical equation for the above reaction follows:
By Stoichiometry of the reaction:
1 mole of aqueous solution of zinc (II) nitrate reacts with 1 mole of aqueous solution of sodium hydroxide to produce 1 mole of solid zinc hydroxide and 2 moles of aqueous solution of sodium nitrate
Hence, the balanced molecular equation is written above.
If the standard reduction potential of a half-cell is positive, the reduction reaction is spontaneous when paired with a hydrogen electrode
<u>Explanation:</u>
- The relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell.
- If the standard reduction potential of a half-cell is positive, the reduction reaction is spontaneous when paired with a hydrogen electrode.
- The reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.
- The reduction to happen the electrons gained by the material that is being decreased must be transported from the atoms of ions of a different material.
Answer:
Ligands
Explanation:
Ligands are small molecules that transmit signals in between or within cells. Ligands exert their effects by binding to cellular proteins called receptors.