J.R. S. answered 05/16/21
Ph.D. University Professor with 10+ years Tutoring Experience
a) KOH + HNO3 ==> H2O + KNO3 ... balanced equation
b) 1 : 1 is the mol ratio
c) 1.21 L x 0.102 mol/L = 0.123 moles
d) 0.123 moles of HNO3 are required
e) (x L)(0.101 mol/L) = 0.123 moles
x = 1.22 L will be required