The reaction of elements and their compounds as among
the reactions of the elements Group IA and IIA
elements Group IA
element IA called alkali metal (alkali metals) are sixth element is lithium (Li), sodium (Na)
, potassium (K), rubidium. (Rb), cesium (Cs), and francium (Fr)
important properties of the group IA elements are as follows:
1. periodic group IA all solid softwood. Bales can be cut Conducts heat and electricity better
second. Group IA elements of all kinds of metal and metal is the most compared to other elements in the periodic
the
third. Low density (Li, Na and K are less dense than water)
4. Size largest atom Compared to other elements in the same period
five. The ionization energy No. 1 (IE1) and the electrolyte Makati Business Activity (EN) and low when
compared to other elements in the same period to a minimum. Show that electrons can be easily possible
six. The metal electrons most easily. (Best reducing agents) compared with other elements in the periodic
the
seventh. Group IA element merges with the metal ionic compound. And the ionic compound element
IA. There is a one electron oxidation number is +1 for the non-
eighth. Periodic Group IA metal swift reaction, such as Group IA element can react with
water and non-ferrous many
experiments on the reaction of sodium metal. The water
to try
one. Add distilled water into a beaker the size of 50 cm 25 cm. And
drops phenol Ralph apply lean down to three drops of observers to
second. Use tongs piece of sodium metal about the size of pea green. Put into a beaker, and the first glass
beaker clock mouth immediately. Observer variation (phenolic oil paint in a lean-in, enabling the user to
test pH - bass. In neutral or acidic solution is colorless. The solution
is based mostly pink) results first. When a drop of phenol Ralph apply lean into the water. No changes (N same color) 2. When sodium piece fit into a beaker containing water mixed phenol Ralph apply lean. Sodium will float on the surface of the water and ran to the water quickly. While running a gas bubble formed. A spark occurs And sparks over the surface of the water with the water layer becomes dark pink Conclusion 1. When a drop of phenol Ralph apply lean into the water. No change occurs because water neutral phenol Ralph apply lean so colorless 2. Sodium water because water has a density of less than three. Sodium run to come to the surface quickly. Because sodium reacts violently with water. Reaction equation 2Na (s) + 2H2O (L) → 2NaOH (AQ) + H2 (G) (bass) gas H2 is going to help push the metal sodium run on water and gas, H happens to be cumulative over. surface water sparks caused by sodium reacts with water to help ignite the gas H ignition of NaOH happening split the Na + and OH-, the bass and happens a lot, the phenol Ralph apply. lean a pink note. The water reacts with the metal of Group IA can write a general equation. As 2M (s) + 2H2O (L) → 2MOH (AQ) + H2 (G) (bass) or 2M (s) + 2H2O (l) → 2M2 + (aq) + 2OH- (aq) + H2 (g). (bass), where M is a metal group IA metals group IA all react with water, then bass (alkali) was called metal group IA that the alkali metal compounds of elements group IA element IA agility to. the reaction was not found in the form of the element independently, but will be in the form of various compounds such as LiCl, NaCl, KCl, NaNO3, KNO3, NaHCO3, and their compounds group IA the most common compound of sodium as salt. chloride (NaCl) in water properties of their compounds group IA are: 1. group IA metal compounds soluble second. Boiling point and high melting capacity Due to ionic bonding 3. When melted or dissolved in water, is bordered by a conductive solution 4. Chloride Group IA elements of a solution in water with a neutral fortune. The oxides and sulfides of iron carbide Group IA when dissolved into a solution containing the treasure base of the element IA Na and K, the heat from the reactor. It conducts heat and electricity better and affordable Cs. Use photochemical cells for switching optical signals into electrical signals Na. Use pipes packed in polyethylene. For the cable and because sodium metal is lighter , cheaper. And outperforms compound Used to cook food
การแปล กรุณารอสักครู่..
