What must be the same on both sides of a balanced chemical equation?
What must be the same on both sides of a balanced chemical equation?
Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.
What chemical equation has the same number of atoms of each element on both sides?
If each side of the equation has the same number of atoms of a given element, that element is balanced. If all elements are balanced, the equation is balanced.
What remains the same on both sides of a chemical reaction?
Chemical reactions are balanced by adding coefficients so that the number of atoms of each element is the same on both sides. Stoichiometry describes the relationship between the amounts of reactants and products in a reaction.
Does the total number of molecules on each side of the equation have to be balanced Why or why not?
Chemical equations must be balanced — they must have the same number of atoms of each element on both sides of the equation. As a result, the mass of the reactants must be equal to the mass of the products of the reaction.
How do you add electrons to a balanced equation?
Simple Redox Reactions
- Write the oxidation and reduction half-reactions for the species that is reduced or oxidized.
- Multiply the half-reactions by the appropriate number so that they have equal numbers of electrons.
- Add the two equations to cancel out the electrons. The equation should be balanced.
Do you balance net ionic equations?
Net ionic equations must be balanced by both mass and charge. Balancing by mass means making sure that there are equal numbers of each element. Balancing by charge means making sure that the overall charge is the same on both sides of the equation.
What is the net ionic equation for magnesium and hydrochloric acid?
Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) –> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.
What is the balanced equation for MG and HCl?
Magnesium and hydrochloric acid react according to the chemical equation: Mg + 2HCl => MgCl2 + H2.
What is the ionic equation for hydrochloric acid and sodium hydroxide?
Let’s see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH + HCl → H2O and NaCl.
What happens when you mix HCl and NaOH?
When an acid and a base react, they neutralise each other to form a salt. Hydrochloric acid reacts with sodium hydroxide to form sodium chloride (the salt) and water. Sodium chloride is made up of Na+ cations from the base (NaOH) and Cl- anions from the acid (HCl). HCl+NaOH→H2O+NaCl.
Is H2SO4 acidic or basic?
Encyclopædia Britannica, Inc. Sulfuric acid is a very strong acid; in aqueous solutions it ionizes completely to form hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−).
Is C5H5N an acid or base?
Pyridine C5H5N is a weak base with Kb=1.7×10^-9.