0.7 g of Na_2CO_3.xH_2O were dissolved in water and the volume wa… - Vidyadip

MCQ

$0.7\ g$ of $Na_2CO_3.xH_2O$ were dissolved in water and the volume was made to $100\ mL$, $20\ mL$ of this solution required $19.8\ mL$ of $N/10\ HCl$ for complete neutralisation. The value of $x$ is

A
$7$
B
$3$
✓
$2$
D
$5$

✓

Answer

Correct option: C.

$2$

c
$\frac{{0.7 \times \frac{{20}}{{100}}}}{{106 + 18x}} \times 2 = \frac{1}{{10}} \times \frac{{19.8}}{{1000}}$

$106+18 \mathrm{x}=141.41=18 \mathrm{x}=35.41$

$x=2$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 1. Some basic concept of chemistry→1. Some basic concept of chemistry — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Increasing order of electron affinity is :-

The hydrogen ion concentration of a $0.006\,M$ benzoic acid solution is $({K_a} = 6 \times {10^{ - 5}})$

Excited state of chlorine in $ClF_3$ is

$IUPAC$ name of ${(C{H_3})_3}C - CH = C{H_2}$ is

For ${N_2} + 3{H_2}$ $\rightleftharpoons$ $2N{H_3}$ equilibrium constant is $k$ then equilibrium constant for $2N_2 + 6H_2 $ $\rightleftharpoons$ $ 4NH_3$ is

Which of the following statement is not correct about the characteristics of cathode rays?

The standard free energy change $\left(\Delta G ^{\circ}\right)$ for $50 \%$ dissociation of $N _{2} O _{4}$ into $NO _{2}$ at $27^{\circ} C$ and $1\, atm$ pressure is $- x\, J \,mol ^{-1}$. The value of $x$ is $......$ (Nearest Integer)

[Given $: R =8.31 \,J \,K ^{-1} \,mol ^{-1}, \log 1.33=0.1239$ $\ln 10=2.3]$

The electron affinities of halogens are $F = 322,Cl = 349, Br = 324, I = 295\, kJ\, mol^{-1}.$The higher value for $Cl$ as compared to that of $F$ is due to :-

Which of the following represents $180\, g$ of water correctly ?

Which one of the following structures has the $IUPAC$ name

$3$-ethyny$l-2$-hydroxy-$4$-methylhex-$3$-en-$5$-ynoic acid?