Which statement defines activation energy?
2 answers:
Answer:
Explanation:
Activation energy is the minimum amount of energy required to begin a reaction.
Reactants have their own certain amount of energy which is known as internal energy and represented by . A reaction involves an energy barrier that needs to be crossed by the reactants in order to form the products. This energy barrier is the activation energy.
A reaction that does not have activation energy will not take place at all.
Therefore, the statement which defines activation energy is that it is the difference between reactant energy and maximum energy.
You might be interested in
Answer:
Mass of SO₂ can be made from 25.0 g of Na₂SO₃ and 22 g of HCl = 12.672 g
Explanation:
SO₂( sulfur dioxide) can be produced in the lab. by the reaction of hydrochloric acid & sulphite salt such as sodium.
the balanced chemical equation is as follows
Na₂SO₃ + 2 HCl → 2 NaCl + SO₂ + H₂O
Moles of Na₂SO₃ =
Moles of HCl =
using mole ratio method to find limiting reagent
For sodium sulfite
for HCl
since <u>sodium sulfite</u> is <u>limiting reactant</u> for above chemical reaction
1 mole of Na₂SO₃ produce 1 mole of SO₂
0.198 mole of Na₂SO₃ produce 0.198 mole of SO₂
∴ Mass of SO₂ produce = mole x molar mass of SO₂
= 0.198 x 64
= 12.672 g
Sucrose will be the most effective. Hence, option D is correct.
<h3>What is sucrose?</h3>Sucrose is simply the chemical name for sugar, the simple carbohydrate we know and love that is produced naturally in all plants, including fruits, vegetables and even nuts.
When salt or sugar (a solute) is combined with water or ice (a solvent) and is evenly distributed, the freezing point is lowered.
→
Hence, sucrose will be the most effective.
Learn more about sucrose here:
#SPJ1