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Question

Write the following is in the form of a word equation:
Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.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 can 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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