In which of these cases will H 2 gas be produced-A- Na - H 2 O coldB- Fe - H 2 O cold C- Mg - H 2 O coldD- Ca - H 2 O hot

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Preparation of Hydrogen from Cold Water and Metals

In which of t...

Question

In which of these cases will $H_{2}$ gas be produced?

N a + H_{2} O (c o l d)

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F e + H_{2} O (c o l d)

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M g + H_{2} O (c o l d)

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C a + H_{2} O (h o t)

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Complete and balance the following reactions.

(a) $N a + H_{2} O \to$ _________ + _________

(b) $C a + H_{2} O \to$ __________+_________

(d) $Z n + H_{2} O \to$ ___________+_________

(e) $F e + H_{2} O \to$ ____________+_________

(f) $Z n + H C l \to$ _____________+__________

(g) $A l + H_{2} S O_{4} \to$ __________+_________

(h) $F e + H C l \to$ ___________+____________

(i) $Z n + N a O H \to$ __________+____________

(j) $A l + K O H + H_{2} O$ _________+____________

$M g + H_{2} O \to$

(cold water)

Complete the following reaction as balanced chemical equations:1.Na+H2O=? 2.K+H2O=? 3.Ca+H2o?

C u + H_{2} {S O}_{4} - \to C u S O_{4} + {S O}_{2} ↑ + H_{2} O

F e + + H_{2} O - \to {F e}_{3} O_{4} + H_{2} ↑

{C H}_{4} + O_{2} \to C O_{2} + H_{2} O

P

H_{2}

H_{2} O

25^{o} C

H_{2}

H_{2} O

25^{o} C

71.18

H_{2}

H_{2} O

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