Physics, asked by banaitpratik774, 6 months ago

Magnesium oxide
(8) How does a metal react with water?
Ans. Sodium and potassium react vigorously
with water to evolve hydrogen. Calcium reacts with
water slowly and less vigorously to evolve hydrogen
and the metal floats on water. Magnesium reacts
with hot water to evolve hydrogen. Aluminium,
iron and zinc do not react with cold or hot water but
they react with steam to evolve their oxides and
hydrogen.
2Nas) + 2H20 - 2NaOH(aq) + H2g) +​

Answers

Answered by s13968
1

Answer:

Metals low in the metal reactivity series do not react with water even at high temperature. Calcium (Ca) reacts slowly with cold water. Magnesium (Mg) reacts very slowly with hot water. It reacts with steam when being heated and gives hydrogen gas and metal oxide.

Silver is having less reactivity as shown in image, so does not react even with steam, so option D is correct.

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