First slide

Hydrogen

Question

Supply the missing term in the reaction
$Zn + . ..... \overset{}{\to} {Na}_{2} {ZnO}_{2} + H_{2}$

Moderate

A

${Na}_{2} {CO}_{3}$
B

NaOH
C

${NaHCO}_{3}$
D

${Na}_{2} CO$ ₃

Solution

$Zn + 2 NaOH (aq) \overset{}{\to} \underset{Sod . Zincate}{{Na}_{2} {ZnO}_{2}} + H_{2}$

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