Science, asked by rahmadearpdpide, 1 year ago

which of the following reaction is exothermic :
a.NaCL+H2O
b.HCL+H2O
c.H2SO4
d.Sugar+H2O

Answers

Answered by mamun59
1
The correct option is => (b) hcl+h2o
As it is a strong acid, and dissociates inside water into h+ and cl- ions which makes this solution process exothermic
rahmadearpdpide: can u anwer this question also plzzzz
mamun59: Yes
mamun59: What is your question
rahmadearpdpide: what is the value of persistence of vision : a.1/10s b.1/16s c.1/25s d.0S ?
mamun59: It is approx. 1/30s or 1/25s
rahmadearpdpide: are u sure ?
rahmadearpdpide: bcz 1 person answered 1/16s
mamun59: Iam sure it is 1/25s.. 1/16 is impossible
rahmadearpdpide: okay thanks again
mamun59: Ur wlcm again
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