Statement $$1$$: The borax $$Na2B4O5$$ $$OH4$$. $$8H2O$$ is a useful as primary standard for titrating against acids.Statement $$2$$: Aqueous solution of borax contains equal amounts of weak acid and its salt.

Question

Statement $$1$$: The borax $$Na2B4O5$$ $$OH4$$.  $$8H2O$$ is a useful as  primary standard for titrating against acids.Statement $$2$$: Aqueous solution of borax contains equal amounts of weak acid and its salt.

Infinity Learn · Accepted Answer

$$Na2B4O5$$ $$OH4$$.  $$8H2O$$  $$+$$  $$2HCl$$                                           →  $$2NaCl$$  $$+$$  $$4H3BO3$$  $$+$$  $$5H2OIndicator$$ methyl orange pH range  $$3.1$$−$$4.4In$$ water, borax gives both $$BOH3$$  and   $$BOH4$$−  and  only  the $$BOH4$$− reacts with HIReason : $$B4O5OH42$$− $$+$$ $$5H2O$$ ⇌   $$3BOH3weak$$  acid $$+$$ $$2$$ $$BOH4-its$$  saltthus acts as a buffer.

Statement 1: The borax ${Na}_{2} [B_{4} O_{5} {(OH)}_{4}] . 8 H_{2} O$ is a useful as primary standard for titrating against acids.
Statement 2: Aqueous solution of borax contains equal amounts of weak acid and its salt.

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Statement 1: The borax Na2B4O5 OH4. 8H2O is a useful as primary standard for titrating against acids.Statement 2: Aqueous solution of borax contains equal amounts of weak acid and its salt.

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Statement 1: The borax ${Na}_{2} [B_{4} O_{5} {(OH)}_{4}] . 8 H_{2} O$ is a useful as primary standard for titrating against acids.
Statement 2: Aqueous solution of borax contains equal amounts of weak acid and its salt.