Write the following in the form of a word equation:
Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide. In the formula $C a B r_{2}$ what does Ca stand for and what is its valency?

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

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Sodium hydroxide + calcium bromide

\to

Calcium hydroxide + sodium bromide; calcium; 2

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Sodium hydroxide + calcium bromide

\leftrightarrow

Calcium hydroxide + sodium bromide; calcium; 2

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Sodium hydroxide + calcium bromide

\to

Calcium hydroxide + sodium bromide; potassium; 2

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Solution

The correct option is B Sodium hydroxide + calcium bromide $\to$ Calcium hydroxide + sodium bromide; calcium; 2
The word equation will be be written as:
Sodium hydroxide + calcium bromide $\to$ Calcium hydroxide + sodium bromide.
Ca stands for calcium. From the formula $C a B r_{2}$ it is evident that the valency of calcium is 2 and the valency of bromine is 1.

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$2 N a O H + C a B r_{2} \to C a (O H)_{2} + 2 N a B r$

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C a B r_{2}

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Write the balanced equation for the following reaction:

Sodium hydroxide reacts with calcium bromide to form calcium hydroxide and sodium bromide.

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