<u>Answer:</u> The ion charge formed by Group I will be +1, by Group VI will be -2 and by Group III will be +3.
<u>Explanation:</u>
Ions are formed when electrons are lost or gained by an atom. When an atom looses electrons, it forms a positive ion known as cations and when an atom gains electrons, it forms a negative ion known as anions.
The electronic configuration of the elements present in
This configuration will loose 1 electron and thus will form an ion of +1.
This configuration will gain 2 electrons and thus will form an ion of -2.
This configuration will loose 3 electrons and thus will form an ion of +3.
Hence, the ion charge formed by Group I will be +1, by Group VI will be -2 and by Group III will be +3.
Answer:
Explanation:
Since the <em>rate constant</em> has units of <em>s⁻¹</em>, you can tell that the order of the reaction is 1.
Hence, the rate law is:
Solving that differential equation yields to the well known equation for the rates of a first order chemical reaction:
You know [A]₀, k, and t, thus you can calculate [A].
Answer:
2.67 × 10⁻²
Explanation:
Equation for the reaction is expressed as:
CaCrO₄(s) ⇄ Ca₂⁺(aq) + CrO₂⁻⁴(aq)
Given that:
Kc=7.1×10⁻⁴
Kc=
Kc= [x][x]
Kc= [x²]
7.1×10⁻⁴ = [x²]
x =
x = 0.0267
x =