zn + 2HCl → ZnCl2 + H2
The rate of the above reaction will be greatly increased if
the zinc is in the powered form
a greater volume of the acid is used
a smaller volume of the acid is used
the reaction vessel is immersed in an ice-bath
the zinc is in the form of pellets
Correct answer is A
No explanation has been provided for this answer.
more CuCl is formed at 40oC
more CuCl2 is formed at 10oC
Less CuCl2 is formed at 10oC
there is no change in the amount of CuCl2 formed at 40oC and10oC
more CuCl is consumed at 40oC
Correct answer is B
No explanation has been provided for this answer.
exothermic
endothermic
isothermal
isomeric
hygroscopic
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements is FALSE?
Copper (ll) ion can be reduced to copper (l) ion by hydrochloric acid and zinc
Sodium metal dissolves in water giving oxygen
Nitrogen is insoluble in water
Carbondioxide is soluble in water
lead has a higher atomic weight than copper
Correct answer is B
No explanation has been provided for this answer.
Na2SO4(aq)
Kl (aq)
an alkali
an acid
a hydrocarbon
Correct answer is D
No explanation has been provided for this answer.