Home
Class 11
CHEMISTRY
Na(2)B(4)O(7).10H(2)O can also be repres...

`Na_(2)B_(4)O_(7).10H_(2)O` can also be represented as

A

`Na_(2) [B_(4) O_(5) (OH)_(4)].8H_(2)O`

B

`2NaBO_(2) .Na_(2)B_(2)O_(3).10H_(2)O`

C

`Na_(2)[B_(4)(H_(2)O)_(4).O_(7)].6H_(2)O`

D

All the above

Text Solution

Verified by Experts

The correct Answer is:
A

`Na_(2)[B_(4)O_(5)(OH)_(4)].8H_(2)O" "` (or)
`Na_(2)B_(4)O_(7).10H_(2)O`
`B_(2)H_(6)+2NH_(3)overset(120^@C)rarrB_(2)H_(6).2NH_3`
Promotional Banner

Similar Questions

Explore conceptually related problems

Na_2 B_4 O_7.10 H_2 O can also be represented as

Borax is Na_(2)B_(4)O_(7).10 H_(2)O consider the following statements about boran

Na_(2)B_(4)O_(7).10H_(2)O overset(conc. HCl)rarr A overset(160^(@)C)rarr B . Compound 'B' is

Equilibrium constants are given (in atm) for the following reactions at 0^(@) C. SrCl_(2).6H_(2)O(s) hArr SrCl_(2).2H_(2)O(s) + 4H_(2)O(g) , K_(p) = 5 xx 10^(-12) Na_(2)HPO_(4). 12H_(2) O(s) hArr Na_(2) HPO_(4). 7H_(2) O(s) + 5H_(2)O(g), K_(p) = 2.43 xx 10^(-13) Na_(2) SO_(4).10H_(2)O(s) hArr Na_(2) SO_(4) (s) + 10 H_(2) O(g), K_(p) = 1.024 xx 10^(-27) The vapour pressure of water at 0^(@) is 4.56 torr. At what relative humidity will Na_(2)SO_(4). 10H_(2)O be eflorescent when exposed to air at 0^(C) ?

underset(("Swollen white mass"))(Na_(2)B_(4)O_(7).XH_(2)O)overset(60^(@)C)rarr underset(("Glassy mass"))(Na_(2)B_(4)O_(7).YH_(2)O)overset(Delta)rarr Na_(2)B_(4)O_(7).ZH_(2)O overset(Delta)rarr B_(2)O_(3)+2NaBO_(2) , then the valsue of (x-y+z) is

H_(2)O_(2) can be estimated by

Boric acid B(OH)_(3) is weak monobasic acid reacts with alkali to form borates. The most common borate of boric acid is borax represented as Na_(2)(B_(4)O_(5)(OH)_(4)).8H_(2)O which is made up of two tetrahedral and two triangular units. On dissolution in water, these tetrahedral and triangular units are sepeated. Borax is useful primary standard for titra tion against acids. The number of B - O - B linkage in borax is / are The number of B - O - B linkages =

Na_(2)CO_(3).10H_(2)O when exposed to air looses water of crystallisation and gives finally