Group 2 and 7 reations

Question	Answer
Reactions of Group 2 elements with water.	M + H2O ----- M(OH)2 + H2
Identification of sulfate ions using BaCl2	Ba2+ + SO4^2- ----- BaSO4 (white ppt)
Extraction of Ti a 1000 degrees C TiO2 + C + 2Cl2 TiCl4 + 2Mg	TiO2 + C + 2Cl2 ----- TiCl4 + CO2 TiCl4 + 2Mg ----- Ti + 2MgCl2
Removal of SO2 from chimney	CaO + SO2 ----- CaSO3 CaCO3 + SO2 ----- CaSO3 + CO2
Neutralize soil using Calcium	H2SO4 + Ca(OH)2 ----- CaSO4 + 2H2O
In digestion tablets as an antiacid	2HCl + Mg(OH)2 ----- MgCl2 + 2H2O
Displacement reactions	2KBr + Cl2 ----- 2KCl + Br2 2KI + F2 ----- 2KF + I2 etc.
Testing for Halide ions	Ag+ + Cl- ----- AgCl (white ppt) Ag+ + Br- ----- AgBr (cream ppt) Ag+ + I- ----- AgI (yellow ppt) AgCl dissolves in dilute NH3 AgBr dissolves in conc. NH3 AgI doen''t dissolve.
Making bleach by disproportionation using cold sodium hydroxide	2NaOH + Cl2 ----- NaClO + NaCl + H2O
Disproportionation of Chlorine with water	Cl2 + H2O ===== 2H+ + Cl- + ClO-
Decomposition of water in sunlight	Cl2 + H2O ===== 2H+ + 2Cl- + 0.5O2
Purification of water using Cl2	Healthy H2O!!!

Resource summary

	Created by Jumael Zafar over 6 years ago