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why should we balance the chemical equation
To staisy Law of conservation of mass
State law of conservation of mass
Mass is neither created nor destroyed in a chemical equation
Common name of calcium oxide
quick lime
chemical name of slaked lime
Calcium Hydroxide
A solution of a substance X is used for white washing. (1) Name the substance X and write its formula.
The solution of the substance used for whitewashing is calcium oxide also called quicklime with chemical formula CaO.
Predict the products Zn + HCl
ZnCl2 and Hydrogen
Predict the missing reactant 2Mg + -------- -->2 MgO
O2
Unbalanced chemical equation is also called as
Skeletal equation
Is respiration process exothermic or endothermic ?
Exothermic process
Which gas turns lime water milky
CO2
Hydrated FeSO4 salt colour
Green
When Hydrated ferrous sulphate salt is heated strongly, it looses water molecules to form
Anhydrous Ferrous sulphate
Write balanced equation equation for decomposition of Anhydrous ferrous sulphate
2FeSO4(s)→heat Fe2O3(s)+SO2(g)+SO3(g)
Write balanced equation for the decomposition of leadnitrate
Pb(NO3)2---->Δ 2PbO+4NO2+O2.
Colour of NO2 gas
brown
