Question

The important questions in ch 1 chemical reactions and equations ? ( chemistry)​

Answer 1

Answer:

Physical state of reactants must be mentioned, e.g.

2H2 (g) + O2 (g)——– > 2H20 (l)

(ii) Condition in which reaction takes place are written on the arrow head, e.g.

chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-1

Consider the following chemical reaction

X + Barium chloride——–> Y + Sodium chloride

(White ppt)

(a) Identify ‘X’ and ‘Y’

(b) The type of reaction

(a) ‘X’ is Na2SO4 and Y is BaSO4.

(b) The type of reaction

Na2SO4 + BaCl2—–> BaSO4 + 2NaCl

(White ppt)

The reaction is precipitation reaction. It is also called double displacement reaction