Gases have three characteristic properties: (1) they are easy to compress<span>, (2) they expand to </span>fill<span> their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal</span>combustion engine<span> provides a good example of the ease with which gases can be compressed.</span>
<u>Answer:</u> The correct answer is Option D.
<u>Explanation:</u>
Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric coefficients. It is represented by
For a general chemical reaction:
The is written as:
There are 3 conditions:
- When ; the reaction is product favored.
- When ; the reaction is reactant favored.
- When ; the reaction is in equilibrium.
At equilibrium, the ratio of concentration of reactants to the concentration of products is equal to 1.
At equilibrium, the rate of forward reaction is equal to rate of backward reaction.
Hence, the correct answer is Option D.
Answer:
aA(g)+bB(g)⇌cC(g)+dD(g) then the equilibrium constant defined by the equation. Kc=[ C ]c[ D ]d[ A ]a[ B ]b. is found to be a constant quantity depending only on the temperature and the nature of the reaction. This general result is called the law of chemical equilibrium, or the law of mass action.
Explanation: Since kf and kr are constants, the ratio of kf divided by kr must also be a constant. This ratio is the equilibrium constant for the reaction, Kc. The ratio of the concentrations of the reactants and products is known as the equilibrium constant expression.
The answer to question 7 is b
Answer:
Balanced reaction is: H₂SO₄ (aq) + 2NaOH (aq) → Na₂SO₄ (aq) + 2H₂O (l)
Explanation:
We determine the reactants:
H₂SO₄ → Sulfuric acid
NaOH → Sodium hydroxide
When a strong acid and a strong base react each other, it is produced water and a determined salt. This is a reaction of <em><u>neutralization</u></em>
We dissociate the reactants:
H₂SO₄ → 2H⁺ + SO₄⁻²
NaOH → Na⁺ + OH⁻
2H⁺ + 2OH⁻ → 2H₂O
2Na⁺ + SO₄⁻² → Na₂SO₄
Balanced reaction is: H₂SO₄ (aq) + 2NaOH (aq) → Na₂SO₄ (aq) + 2H₂O (l)