1 Correction to: J. Umm Al-Qura Univ. Appll. Sci. https://doi.org/10.1007/s43994-022-00007-4

In this article equation 8 × 10−4 mol dm3 was incorrect, it should have been 8 × 10−4 mol dm−3.

In references 24, 25, 27 and 28 the second author name was incorrect. They should have been as shown below. The original article has been corrected.

24. Kabir-ud-Din, Fatma W, Khan Z (2004) Effect of surfactants on the oxidation of oxalic acid by soluble colloidal MnO2. Colloids Surf A Physicochem Eng Asp 234:159–164.

25. Kabir-ud-Din, Iqubal SMS, Khan Z (2005) Kinetics of the reduction of colloidal MnO2 by citric acid in the absence and presence of ionic and non-ionic surfactants. Inorg React Mech 5:151–166.

27. Kabir-ud-Din, Iqubal SMS, Khan Z (2005) Reduction of soluble colloidal MnO2 by DL-malic acid in the absence and presence of nonionic Triton X-100. Colloid Polym Sci 283:504–511.

28. Kabir-ud-Din, Iqubal SMS, Khan Z (2005) Effect of ionic and non-ionic surfactants on the reduction of water soluble colloidal MnO2 by glycolic acid. Colloid Polym Sci 284:276–283.