Is the equation: Na + H 2 O → NaOH + H 2 balanced? Why?

Given reaction: Na + H 2 O → NaOH + H 2 In the given reaction, the equation is not balanced properly on both sides of the reaction. For example, on the reactant side, there are only two atoms of hydrogen and on the product side, there are three hydrogen atoms. So, the number of hydrogen atoms varies which is not balanced in the reaction. The balanced equation is given below: 2 Na + 2 H 2 O → 2 NaOH + H 2

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Living Science 7>Materials>Chapter 3 - Structure of Matter>ORAL QUESTIONS

Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS

Author:Mukul Sahgal & A C Sahgal

Mukul Sahgal Science Solutions for Exercise - Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS

Attempt the free practice questions from Exercise 2: ORAL QUESTIONS with hints and solutions to strengthen your understanding. Living Science 7 solutions are prepared by Experienced Embibe Experts.

Questions from Mukul Sahgal and A C Sahgal Solutions for Exercise 2: ORAL QUESTIONS with Hints & Solutions

EASY

7th CBSE

IMPORTANT

Living Science 7>Chapter 3 - Structure of Matter>ORAL QUESTIONS>Q 1

What is the difference between the symbol and the formula of oxygen?

MEDIUM

7th CBSE

IMPORTANT

Living Science 7>Chapter 3 - Structure of Matter>ORAL QUESTIONS>Q 2

What specific name is given to 'the number of hydrogen atoms that can combine with or be displaced by one atom of an element'? Is this a modern definition?

MEDIUM

7th CBSE

IMPORTANT

Living Science 7>Chapter 3 - Structure of Matter>ORAL QUESTIONS>Q 3

An element $X$ forms a compound ${XH}_{3}$ with hydrogen. Another element $Y$ forms a compound ${YX}_{2}$ with $X$ . Given that the valency of hydrogen is $1$ , what are the valencies of $X$ and $Y$ ?