sOlve iT i Will mARk yOu As A BRAINLIST
1) Translate the following statements into chemical equations and balance them
→ Hydrogen gas combines with Nitrogen to form Ammonia
2) Define Precipitation reaction with one example.
(b) Define Combination reaction with one example.
(c) Write the common name of CaOCI. How is it prepared? Write the chemical equation of its preparation?
And mention its one use.
Answers
Answer:
1 ) Ans:- N2(g) + 3H2(g) ⇔ 2NH3(g)
2) (a) Ans:- Precipitation is that type of reaction in which the solid substance came out after the reaction and this solid substance is insoluble in water.
For example:-2KI(s) + Pb(NO3) 2(s) → 2KNO3(aq) + PbI2(s)
b) Ans:- The reaction in which two or more than two compounds react to form a single product is called combination reaction.
For example:- CaO + CO2 → CaCO3
(c) Ans:- The common name of CaOCI2 is bleaching powder. Bleaching powder is used to disinfect drinking water.
Bleaching powder is prepared by passing chlorine gas over dry slaked lime
Ca(OH)2 + Cl2 → CaOCl2 + H2O
Explanation:
1) 3 H2(g) +N2(g) -----> 2 NH3(g)
2) The reaction in which one of the products formed is an insoluble substance and is thrown out of the substance as solid is called precipitation reaction.
eg:AlCl3 + 3NH4OH---->Al(OH) 3↓+3 NH4Cl
b)The type of reaction in which two or more substances combine to form a single substance is called combination reaction.
eg: 2Mg+ O2 → 2MgO
c) CaOCl2= Bleaching powder
Bleaching powder is manufactured by the action of chlorine on slakedlime powder at 35 degree Celsius.
Ca(OH) 2+ Cl2→ CaOCl2 +H2O
It is used as disinfectant and germicide.
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