# The critical constant for water are $374^{\large\circ}C$ 218 atm and 0.0566 litre $mol^{-1}$. Calculate a , b and R.
$\begin {array} {1 1}(a)\;0.0189\;litre\;mol^{-1},2.095\;litre^2atm,0.05086\;litre\;atm\;K^{-1}\;mol^{-1}\\(b)189\;litre\;mol^{-1},0.95\;litre^2atm,0.05086\;litre\;atm\;K^{-1}\;mol^{-1}\\(C)\;0.0189\;litre\;mol^{-1},20.95\;litre^2atm,5.086\;litre\;atm\;K^{-1}\;mol^{-1}\\(d)none\;of\;these \end {array}$