Nacl=na+cl2 NaOH + HCI = HOH + NaCI
H2 + O2 = H20
K + AgCl2 = Ag + KCI
C5H9O + O2 = CO2 + H2O
HCI + NaOH = H2O + NaCl

Please somebody tell me their correct reaction types

a polar bond is formed when electrons are shared unevenly between atoms

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l

the answer is symmetrical : )