What products are formed when metals react with cold water?

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

Metal oxides

Metal oxides and hydrogen

Metal hydroxides and hydrogen

Metal oxides and oxygen

answer is D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

When metals react with cold water, they form the corresponding metal hydroxide and hydrogen gas.
$M e t a l + w a t e r \to M e t a l h y d r o x i d e + h y d r o g e n$
Some examples of metals reacting with cold water are-
Most metals do not react with water. However, alkali metals react violently with water.
The reaction of sodium metal with water:

Sodium metal forms sodium hydroxide and releases hydrogen gas along with a large amount of heat when it reacts with water.
$N a + H_{2} O \to N a O H + H_{2}$
The reaction of potassium metal with water:

Potassium metal forms potassium hydroxide and releases hydrogen gas along with a large amount of heat when it reacts with water.
$K + H_{2} O \to K O H + H_{2}$
The reaction of metallic calcium with water:

When calcium reacts with water, it forms calcium hydroxide along with hydrogen gas and heat.
$C a + 2 H_{2} O \to C a {(O H)}_{2} + H_{2}$
The reaction of metallic magnesium with water:

Metallic magnesium reacts slowly with water to form magnesium hydroxide and hydrogen gas.
$M g + 2 H_{2} O \to M g {(O H)}_{2} + H_{2}$
Thus, metals produce metal hydroxides and hydrogen gas in reaction with cold water.