For the following write the chemical formulas for the reactants and predict the most likely reaction type , then write balanced equations for each:
A.) magnesium chloride is heated
b.) silver nitrate is reacted with sodium sulfide
c.) methanol is burned in the presence of oxygen
d.)hydrochloric acid is reacted completely with strontium hydroxide
What's the problem here? What do you not understand about these?
I don't get how to write the chemical formulas its confusing and I'm stuck on this question for the past 2 hours and I need to get it done
Do you mean that you don't understand why magnesium chloride is MgCl2 or silver nitrate is AgNO3?
Could you write the chemical formulas and the reaction types and ill balance them cause it would be a great help
No, I'm not going to do your work for you; however, I'll assume that you don't know how to write the formulas.
For magnesium chloride.
The symbol for magnesium is Mg.
The symbol for chloride is Cl.
So you look up the valence of Mg and it is +2. If you don't have a table Mg is in group 2 so the most probably valence is +2. Chlorine is in group 17 (or VIIA depending upon the system your prof is using) and is -1.
Write on a sheet of paper MgCl.
Over the Mg write the valence of 2 and over Cl write 1. Then mentally draw an X through the middle of the MgCl you've written. The 2 at the top of the left X mark goes to the bottom of that line. The 1 over the top right X line follows down to the bottom so you have Mg1Cl2. You don't need to write a 1. So the formulas are
MgCl2
AgNO3 + Na2S
CH3OH + O2
HCl + Sr(OH)2
Ok and ill balance them thank u
To determine the chemical formulas for the reactants and predict the most likely reaction type, we need to understand the types of reactions that can occur.
1. A) Magnesium chloride is heated:
When magnesium chloride is heated, it undergoes a decomposition reaction. In this reaction, a compound breaks down into its constituent elements.
The chemical formula for magnesium chloride is MgCl2.
The balanced equation for this reaction is:
2 MgCl2(s) → 2 Mg(s) + Cl2(g)
2. B) Silver nitrate is reacted with sodium sulfide:
In this case, silver nitrate (AgNO3) reacts with sodium sulfide (Na2S). This is a double displacement reaction, also known as a precipitation reaction. In this type of reaction, the positive ions of two compounds switch places, forming two new compounds.
The chemical formulas for silver nitrate and sodium sulfide are AgNO3 and Na2S, respectively.
The balanced equation for this reaction is:
AgNO3(aq) + Na2S(aq) → Ag2S(s) + 2 NaNO3(aq)
3. C) Methanol is burned in the presence of oxygen:
When methanol (CH3OH) is burned in the presence of oxygen, combustion occurs. Combustion reactions involve the reaction of a substance with oxygen, resulting in the release of heat and, in most cases, the formation of carbon dioxide and water.
The chemical formula for methanol is CH3OH.
The balanced equation for this reaction is:
2 CH3OH(l) + 3 O2(g) → 2 CO2(g) + 4 H2O(g)
4. D) Hydrochloric acid is reacted completely with strontium hydroxide:
When hydrochloric acid (HCl) reacts with strontium hydroxide (Sr(OH)2), it is a double displacement reaction. The positive ions of the two compounds switch places and form two new compounds.
The chemical formulas for hydrochloric acid and strontium hydroxide are HCl and Sr(OH)2, respectively.
The balanced equation for this reaction is:
2 HCl(aq) + Sr(OH)2(aq) → 2 H2O(l) + SrCl2(aq)
Remember to always balance the equations by ensuring the same number of atoms on both sides of the equation.