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Byju's Answer
Standard XII
Chemistry
Preparation of Carboxylic Acids
Balance the f...
Question
Balance the following equations :- 1. Al(s) + NaOH(aq) ----------> NaAlO2(aq) + H2O(l) 2. Zn(s) + NaOH(aq) ----------> Na2ZnO2(aq) + H2O(l)
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Q.
Balance the following equation stepwise.
a. H
2
S
2
O
7
(l) + H
2
O(l) → H
2
SO
4
(l)
b. SO
2
(g) + H
2
S(aq) → S(s) + H
2
O(l)
c. Ag(s) + HCl(aq) → AgCl ↓+ H
2
↑
d. NaOH(aq) + H
2
SO
4
(aq) → Na
2
SO
4
(aq) + H
2
O(l)
Q.
Complete the following reactions:
Z
n
(
s
)
+
N
a
O
H
(
a
q
)
h
e
a
t
−
−
→
Q.
For which of the following reactions,
Δ
H
≠
Δ
U
?
Q.
Complete and balance the following chemical equations:
(a)
Zn
(
s
)
+
HCl
(
aq
)
→
(b)
Na
2
CO
3
(
s
)
+
HCl
(
aq
)
→
(c)
NaHCO
3
(
s
)
+
HCl
(
aq
)
→
(d)
NaOH
(
aq
)
+
HCl
(
aq
)
→
(e)
CuO
(
s
)
+
HCl
(
aq
)
→
Q.
Consider the following balanced chemical equation:
N
a
O
H
(
a
q
)
+
H
N
O
3
(
a
q
)
→
N
a
N
O
3
(
a
q
)
+
H
2
O
(
l
)
If
43.55
grams of
N
a
O
H
is present in
1.23
L
of an
N
a
O
H
solution of unknown concentration and mixed with
1.35
L
of a
1.25
molar
H
N
O
3
solution, which of the following is true?
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