If the formula of Borax is Na 2 B 4 O x ( OH ) y · zH 2 O , then x + y + z = _ _ _ _ _ _

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ChemistryComplete Pblock-p-Block 13,14Easy2 minPYQ_2023

ChemistryEasynumerical

If the formula of Borax is ${Na}_{2} B_{4} O_{x} (OH)_{y} \cdot {zH}_{2} O$ , then $x + y + z =______$

Answer:

17.00

Solution:

The crude name of borax is Tincal. It has the molecular formula ${Na}_{2} B_{4} O_{7} . 10 H_{2} O$ and structural formula of borax is ${Na}_{2} [B_{4} O_{5} (OH)_{4}] . 8 H_{2} O$

Based on the structural formula, $x = 5, y = 4 and z = 8$

$(x + y + z) = 5 + 4 + 8 = 17$

Stream:JEESubject:ChemistryTopic:Complete Pblock-Subtopic:p-Block 13,14

⏱ 2mℹ️ Source: PYQ_2023

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