Chemistry · 2021
JEE Main · 4 August 2021, Shift 2 · Q57
x × 10^-5 g of Ca ( OH )_2 are required to produce 200 cm^3 of an aqueous solution of pH 10.0. The value of x is \ \ \ \. (Nearest integer) [Given:…
$\displaystyle x \times 10^{-5} \mathrm{~g}$ of $\displaystyle \mathrm{Ca}(\mathrm{OH})_2$ are required to produce $\displaystyle 200 \mathrm{~cm}^3$ of an aqueous solution of pH $\displaystyle 10.0$ .
The value of $\displaystyle x$ is \_\_\_\_.
(Nearest integer)
[Given : Atomic masses : Ca : $\displaystyle 40.0$ u; H : $\displaystyle 1.0$ u; O : $\displaystyle 16.0$ u]
Official answer
74
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