MCQ
Ether which is liquid at room temperature is
- A${C_2}{H_5}OC{H_3}$
- B$C{H_3}OC{H_3}$
- ✓${C_2}{H_5}O{C_2}{H_5}$
- DNone of these
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$(K_f =-1.86\,^o\,C/m)$
If the above equation is balanced with integer coefficients, the value of $z$ is____
$(A)$ The $pH$ of $1 \times 10^{-8}\,M\,HCl$ solution is $8$.
$(B)$ The conjugate base $H _2 PO _4^{-}$is $HPO _4{ }^{2-}$.
$(C)$ $K _{ w }$ increases with increase in temperature.
$(D)$ When a solution of weak monoprotic acid is titrated against a strong base at half neutralisation point, $pH =\frac{1}{2} pK _{ a }$
Choose the correct answer from the option given below.