Na2O(s) + H2O(l) = 2NaOH(aq)
Like sodium metal , sodium oxide reacts with water, however, it does NOT liberate hydrogen, so there is no 'popping' or flashing flame.
Na2O is a BASE
NaOH is an ALKALI (Soluble Base)
These two aCIDS DO not REACT, BECAUSE OF THE COMON ION (h^(+)) EFFECT,
Zinc hydroxide is (almost) insoluble in water, while caesium acetate is soluble
Zn(CH₃COO)₂(aq) + 2 CsOH(aq) → Zn(OH)₂(s)↓ + 2 Cs(CH₃COO)
The net ionic equation is:
Zn2+(aq) + 2OH-(aq) --> Zn(OH)2(s)
2KOH + H2SO4 = K2SO4 + 2H2O
Ba^(2+) + 2Cl^(-) = BaCl2
Notice, the barium ion hs a charge of '2+' . This must be balanced by a charge of '2-' . This is done by having 2 chloride ions 'Cl^- & Cl^- ..Hence (2Cl^-).
BaCl2 is barium chloride. It is an ionic crystalline solid at STP.
The Balanced reaction equation is
2HCl(aq) + CaCO3(s) = CaCl2(aq) + H2O(l) + CO2(g)
Type of reaction is 'neutralisation'. The acid is being neutralised to a salt, water and carbon dioxide.
It can also be thought of as an 'Acid + Carbonate' reaction.
Products are placed in the right side of the chemical reaction.
2HNO3 + K2CO3 = 2KNO3 + H2O + CO2
Remember the general equations for acid and carbonate.
Acid + Carbonate = Salt + Water + Carbon Dioxide.
NB
Other general equations for acid reactions are
Acid + Base = Salt + Water
Acid + Alkali = Salt + Water
Acid + Metal = Salt + Hydrogen.
KOH(aq) + HNO3(aq) = KNO3(aq) + H2O(l)
How does a subscript affect the element just before it?
Remember the Law of Conservation of Mass. This means that the given number of atoms and elements on both sides of the reaction eq'n MUST be the same.
It is also known as a BALANCED EQUATION.
e.g.
2KOH + H2SO4 = K2SO4 + 2H2O
In this case the prefix '2' of KOH, indicates that there are 2 x K , 2 x O & 2 x H. The suffix '2' in H2SO4 indicates 2 X H , only 1 x S & 4 x O.
So overall on the reaction side we have
2 x K
6 x O
4 X H
1 x S .
You MUST end up with this same numbers on the product side.
Hence we have in K2SO4 , 2 x K, 1 x S , & 4 x O. The prefix '2' of H2O indicates that there are 2 x 2 = 4 H & 2 x 1 =2 O
Hence, overall we have on the product side
2 x K
4 + 2 = 6 x O
4 x H
1 x S
This agrees with the reactant numbers and elements, so the chemical reaction equation is balanced.
Hope that helps!!!!
The word eq'n is
Ethanoic acid + propanol = propylethanoate + water.
The chemical equation is
CH3C(=O)-OH + CH3CH2CH2OH CH3C(=O)-O-CH2CH2CH3 + H2O)
the balanced symbol equation for nitric acid and sodium hydroxideis as follows :
potassium hydroxide + nitric acid → potassium nitrate + water.
KOH + HNO3 → KNO3 + H2O
The general equation for burning/combusting fossil fuels is:-
fossil fuel + oxygen(air) = Carbon dioxide and Water.
becasuse atoms are never gained or lost in a chemical reaction
You r question does not make sense, as it ends in 'and?'.
However, Phosphorus oxide is usually named as 'phosphorus pentoxide.
The formula being 'P2O5'. Phosphorus pentoxide often form the dimer 'P4O10',
Your question is not so clear; but:
- liquid water - (H2O)l
- water vapour- (H2O)g
- sodium chloride as a solid - (NaCl)s
Sodium chloride is dissolved and dissociated in water as follow:
NaCl-----------------Na+ + Cl-
There is no chemical fomula for milk.
Milk is a very complex mixture of chemicals. This mixture contains protein (most notably casein and whey protein), carbohydrates (sugar), vitamins, minerals, butterfat and water.
Iodine in the iodized salt exist as iodine salts (potassium iodide/iodate or sodium iodide/iodate).
These salts are dissolved and dissociated in the organism as NaCl.
the formula for Sodium Chloride is NaCl
when we mix Na with an acid HCl we get NaCl
Na+HCl------->NaCl+H2
The acetic acid in vinegar will eventually dissolve the egg shell (composed from calcite, a crystalline form of calcium carbonate) away entirely. Without the hard shell, the albumin and the yolk will be held egg-shaped by the thin skin of the inner shell membrane. The inner skin membrane is between the hard outer shell and the albumin (commonly called egg white).
CuSO4(aq) + BaCl2(aq) = CuCl2(aq) + BaSO4(s)
This is the classic test for sulphates. A white precipitate of barium sulphate forms.
Many combinations of compounds could make magnesium sulfate: