a small amount of black powdery substances is taken in test tube, when reacted with dil HCl it gives a blue solutions
a. name the black powdery substance, and the compound which gives blue solution.
b. write chemical equation for the reaction between black powder and dil HCl
subject: science
lesson: acids and bases
Answers
Answered by
10
a).Substance is Cu0 ,copper oxide
b).Cu0+2HCl gives CuCl2+H20
yagneshwarchinni:
thanks
for your help to me
can you say me another answer
A gas formed when NaCl is reacted with conc sulphuric acid turns moist blue litmus red.answer the following questions. a. what is the nature of the gas?, b.what is the name and formule of the gas?,c. what will happen when a dry blue litmus paper is exposed to dry gas?
please say me the answer fast
hii
1).HCl
Which is acidic
no change of litmus
Hey here is ur solution
Answered by
2
Answer:
(a) CuO Copper oxide
(b) Cuo+2HCL gives CuCl2+H2O
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