Explanation: Two elements H
2
and Cl
2
combine to form a single compound, HCl. Hence, it is a
combination reaction
. As two elements combine to form a compound, it is an element – element combination.
What is the balanced equation for HCl and hydrogen chlorine?
1) H2 (g ) + Cl2(g) => 2 HCL (l) . chemical equation is balanced because to follow the law of conservation of that is. in a balanced chemical equation has equal number of atoms of different elements in the reactant as well as product.
What happens when H2 reacts with Cl2?
Hint When hydrogen gas reacts with chlorine gas
it produces hydrogen chloride
. This reaction is exothermic in nature as heat is released in this reaction. It is not carried out in presence of direct sunlight. Since this reaction is exothermic in nature, it is not carried out in direct sunlight.
Why chlorine is written as Cl2?
Chlorine is called Cl2
because it is a diatomic molecule
. Diatomic means there are two atoms of the same elements in the molecule. There are other diatomic molecule, such as hydrogen (H2), nitrogen (N2), oxygen (O2), fluorine (F2), chlorine (Cl2), bromine (Br2), iodine (I2).
Why do we write hydrogen as H2?
Molecular hydrogen gas, or H2, is the primary form in which hydrogen is found. … Because there are two hydrogen atoms, we call this diatomic hydrogen, di meaning two.
Because the hydrogen atoms are covalently bonded together they form a molecule
; so H2 is also referred to as molecular hydrogen.
What is the formula of hydrogen chlorine?
Hydrogen chloride gas and hydrochloric acid are important in technology and industry. Hydrochloric acid, the aqueous solution of hydrogen chloride, is also commonly given the formula
HCl
. A Br o nsted acid derived from one or more inorganic compounds.
How do you make HCl from Cl2?
Hydrogen chloride is produced by combining chlorine and hydrogen:
Cl
2
+ H
2
→ 2 HCl
.
Is H2 Cl2 2HCl a redox reaction?
Anything that involves change of oxidation states of reactants in the products or exchange of electrons can be considered a redox reaction. So,
H2 has been oxidised
and Cl2 has been reduced, making this a redox reaction.
Why is the reaction between H2 and Cl2 slow?
H2 and Cl2 require more energy to react, meaning they
only react very slowly at room temperature
.
Is hydrogen chloride and hydrochloric acid the same?
Hydrogen chloride gas and
hydrochloric acid have the same chemical
formula: HCl. The difference between the two is that hydrogen chloride is a gas, and hydrochloric acid is an aqueous solution.
What is H2 in chemistry?
Hydrogen
, H, is a highly flammable gas (H2)and the most common component of the universe. It is the lightest element ever and is colorless, odorless, and tasteless. … It’s also the most abundant chemical element on the periodic table. Hydrogen(H) is a gas, and is the first element on the periodic. table.
Is Cl2 a chlorine?
Yes,
chlorine gas is Cl2
. There are 7 diatomic molecules (H,O,N,Cl,Br,I,F), so whenever these are gases or “exist naturally”, you should use the subscript 2.
What is a balanced chemical equation example?
A balanced chemical equation occurs when
the number of the atoms involved in the reactants side is equal to the number of atoms in the products side
. In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3). The reactants are nitrogen and hydrogen, and the product is ammonia.
What Cl2 means?
“Cl”” represents chlorine atom””Cl2′′” represents
chlorine molecule
. List out any two differences between atoms and molecules.“
Why do we write H2 and O2?
Why is oxygen written as O
2
? The difference between oxygen (O) and oxygen (O2 )is that the
former
is an oxygen atom while the latter consists of two O atoms bound together, forming a molecule also called oxygen. Oxygen is usually found as a diatomic gas. Therefore, we write it as O2.
Why formula of a molecule of hydrogen is H2 and not h3?
Two atoms of hydrogen combine to form a molecule. Each hydrogen atom has one electron in its 1s orbital. … Since there is no other electron left, the hydrogen molecule (H
2
)
has no capacity for bonding with more hydrogen atoms
. Therefore, only H
2
exists and molecules like H
3
, H
4
etc are not formed.
Where is hydrogen on the periodic table?
Hydrochloric acid
(HCl, also known as muriatic acid) is a colorless corrosive, strong mineral acid with many industrial uses among which, when it reacts with an organic base it forms a hydrochloride salt.
How do you make Cl2?
So if you glance at the periodic table, you will see hydrogen is
the first element in the table
. It is the smallest element on the table. It has atomic number one, which means it has only one electron orbiting it its shell. In fact, Hydrogen has only one shell.
What is balanced chemical equation Why should chemical equation be balanced?
A chemical equation should always be balanced because
the law of conservation of mass states that matter can neither be created nor destroyed so in a chemical equation the total mass of reactants must be equal to the mass of products formed
i.e. the total number of atoms of each element should be equal on both the …
What is HCl in chemistry?
In laboratory Cl2 gas is prepared by
heating a mixture of NaCl , MnO2 with conc. H2SO4
. On industrial scale Cl2 is obtained by the electrolysis of aqueous solution of NaCl called Brine. Na
+
ions are collected at cathode where they are mixed with water to produce sodium hydroxide and liberate hydrogen gas.
What are the reactions of f2 and Cl2 with water?
- (i) Cl
2
+ H
2
O → HCl + HOCl. - (Hydrochloric acid) (hypochlorous acid)
- (ii) 2F
2
+ 2H
2
O → 4H
–
(aq) + 4F
–
(aq) + O
2
+ 4HF(aq)
What is the role of MnO2 in the preparation of Cl2 from HCl?
The important methods of making chlorine from the acid may be considered under two heads: those using manganese oxides for decomposing the acid, and those not using manganese for this purpose. The function of manganese is
to oxidize the hydrogen of the acid, forming water and liberating the chlorine
.
When the following equation is balanced What is the coefficient for hcl mg HCL mgcl2 H2?
1
is the coefficient.
When the equation Fe cl2 fecl3 is balanced What is the coefficient for cl2?
The coefficient of Cl
2
is c) 3.
What type of reaction is AG H2S –> Ag2S H2?
This is
a redox reaction
. The silver is oxidized from the 0 oxidation state to the +1 oxidation state and the hydrogen is reduced from the +1 oxidation state to the 0 oxidation state. In being oxidized, the silver causes the reduction of the hydrogen. Silver is the reducing agent.
