32395.5
30156.3
60784.5
15196.5
Correct answer is B
Cu → Cu2++ 2e
64g Cu requires 2 x 96500 coloumbs 10g Cu requires x columbs
x = 10x2x96500/64 =30156.3
H 2O (g) + C (s) → H2(g) + CO(g)
The oxidizing agent in the reaction above is
CO(g)
C(s)
H2O(g)
H(2)(g)
Correct answer is C
No explanation has been provided for this answer.
0 to + 4
0 to + 2
+ 1 to + 2
+ 1 to + 3
Correct answer is B
No explanation has been provided for this answer.
Which of the following salts will turn blue litmus red?
Sodium tetrahydroxozincate (ll)
Sodium hydrogentetraoxosulphate (VI)
Sodium trioxocarbonate (lV)
Zinc chloride hydroxide
Correct answer is B
No explanation has been provided for this answer.
The mathematical expression of PH is
log 10[OH-]
log 101/[H 3 O+]
log 10[H 3 O+]
log 101/[OH -]
Correct answer is B
No explanation has been provided for this answer.