When the element is reduced it gains electrons, maybe it's charge becomes more negative.
A precipitate is a product of a reaction that is insoluble in the reaction medium (usually water).
Why?
One of the signs that a reaction happened is that a precipitate forms. Let's take the reaction between Silver Nitrate (AgNO₃) and Sodium Chloride (NaCl) as an example:
AgNO₃(aq) + NaCl(aq) → AgCl(s)↓ + NaNO₃(aq)
In this reaction, Silver Chloride (AgCl) is an insoluble product of the reaction, and precipitates out of the reaction medium
If we write down the ionic equation, we find out the following:
Ag⁺ + NO₃⁻ + Na⁺ + Cl⁻ → AgCl(s) + Na⁺ + NO₃⁻
The ions that appear at both sides of the arrow are called spectator ions, since they are not directly involved in the process of the reaction, making the net ionic equation to be:
Ag⁺ + NO₃⁻ → AgCl(s)
Have a nice day!
#learnwithBrainly
Answer: A. 219K
Explanation:
Using the Combined Gas Law; P1 V1/T1 = P2V2/T2
Where P1 = 0.92 atm, P2 = 1.00 atm
V1 =4.0 L, V2 = 5.0 L
T1 = ?, T2 = 25 celcius = 298K
We therefore make T1 the subject of the formular;
T1 = P1 . V1 .T2 / P2. V2
= 0.92atm x 4.0L x 298K / 1.00 atm x 5.0 L
= 1096.64 / 5
= 219.328 approx 219K
I think the correct answer would be spontaneous oxidation-reduction reaction. The type of reaction in a voltaic cell is best described as a spontaneous oxidation-reduction reaction. A voltaic cell uses the energy from the chemical reaction involved to produce electrical energy. Hope this answers the question.
Answer:
As potassium is larger than sodium, potassium's valence electron is at a greater distance from the attractive nucleus and is so removed more easily than sodium's valence electron. As it is removed more easily, it requires less energy, and can be said to be more reactive.
Explanation:
<em>Hope you're having a splendiferous day</em><em>.</em>
<em>Just a bored kid willing to help...</em>
