STD 11 - 2. structure of atom — NEET STD 11 Science — Question

$(i)$ $PCl_3 + 3H_2O \to H_3PO_3 + 3HCl$   

$(ii)$ $SF_4 + 3H_2O \to H_3SO_3 + 4HF$   

$(iii)$ $BCI_3 + 3H_2O \to H_3BO_3 + 3HCl$   

$(IV)$ $XeF_6 + 3H_2O \to XeO_3 + 6HF$

Then according to given information the incorrect statement is

Name                                   $IUPAC$ Official Name

$(a)$ Unnilunium                   $(i)$ Mendelevium

$(b)$ Unniltrium                     $(ii)$ Lawrencium

$(c)$ Unnilhexlum                  $(iii)$ Seaborglum

$(d)$ Unununnium                 $(iv)$ Darmstadtium

$Pt$ $\mid H _{2}$ $(g,1 \,bar)$ $\left| H ^{+}( aq ) \| Cu ^{2+}( aq )\right| Cu ( s )$

is $0.31\, V$. The $pH$ of the acidic solution is found to be $3 ,$ whereas the concentration of $Cu ^{2+}$ is $10^{- x } \,M$. The value of $x$ is $.....$

(Given: $E _{ Cu ^{2+} / Cu }^{\ominus}=0.34 \,V$ and $\frac{2.303 RT }{ F }=0.06\, V$ )

($A$) a high activation energy usually implies a fast reaction.

($B$) rate constant increases with increase in temperature. This is due to a greater number of collisions whose energy exceeds the activation energy.

($C$) higher the magnitude of activation energy, stronger is the temperature dependence of the rate constant.

($D$) the pre-exponential factor is a measure of the rate at which collisions occur, irrespective of their energy.