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Question

Write the following in the form of a word equation:

2NaOH + CaBr2 Ca(OH)2 + 2NaBr

In the formula CaBr2 what does Ca stand for and what is its valency?


A

Sodium hydroxide + Calcium bromide = Calcium hydroxide + Sodium bromide; calcium; 1

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B

Sodium hydroxide + Calcium bromide Calcium hydroxide + Sodium bromide; calcium; 2

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C

Sodium hydroxide + Calcium bromide Calcium hydroxide + Sodium bromide; calcium; 2

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D

Sodium Hydroxide + Calcium bromide Calcium hydroxide + Sodium bromide; potassium; 2

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Solution

The correct option is B

Sodium hydroxide + Calcium bromide Calcium hydroxide + Sodium bromide; calcium; 2


The word equation will be written as:
Sodium hydroxide + Calcium bromide Calcium hydroxide + Sodium bromide.
Ca stands for calcium. From the formula CaBr2 it is evident that the valency of calcium is 2 and the valency of bromine is 1.


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