Chlorine
Hydrogen
Oxygen
Sodium
Correct answer is B
No explanation has been provided for this answer.
What is the oxidation number of chromium in K2CrO4?
+1
+2
+4
+6
Correct answer is D
K2CrO4 (O.N of K) X 2 + O.N of Cr + (O.N of oxygen) X 4 = 0
1 X 2 + X + -2 X 4 = 0
2 + x + -8 = 0
2 + x - 8 = 0
x = 8 - 2 = + 6
Which of these cell notations is the correct representation of a Daniell cell?
Zn(s) / Zn2+(aq) // Cu2+(aq)/Cu(s)
Cu(s) / CU2+(aq) // Zn2+(aq) / Zn(s)
Zn2+(aq) / Zn(s) // Cu2+(aq) /Cu(s)
Cu2+(aq) / Cu(s) // Zn(s) / Zn2+(aq)
Correct answer is A
No explanation has been provided for this answer.
lower the value of ∆H
increase the time for attainment of equilibrium
shorten the time for attainment of equilibrium
decrease the yield of ammonia
Correct answer is C
No explanation has been provided for this answer.
CI-
Pb 2+
SO 2-
Zn2+
Correct answer is A
No explanation has been provided for this answer.