The number of hydroxide ions,produced by one molecule of sodium carbonate $(Na_2CO_3)$ on hydrolysis is

  • A
    $2$
  • B
    $1$
  • C
    $3$
  • D
    $4$

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$A$ solution of sodium borate has a $pH$ of approximately

$NH_4CN$ is a salt of a weak acid $HCN$ $(K_a = 6.2 \times 10^{-10})$ and a weak base $NH_4OH$ $(K_b = 1.8 \times 10^{-5})$. $A$ $1 \ M$ solution of $NH_4CN$ will be:

On dilution,the $pH$ of $CH_3COONa$ solution:

The $pH$ value is maximum in $0.1 \, M$ solution of:

Assertion $: -$ The aqueous solution of $Na_3PO_4$ is basic in nature.
Reason $: -$ $Na_3PO_4$ in its aqueous solution undergoes anionic hydrolysis.

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